Petrochemical Deep Processing Zone [One Question per Day] Summary Thread – Updated daily by the moderator

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This post was last edited by LQ198619 on 2017-5-5 at 12:36. Summary of daily questions for 2017: [Daily Question No. 1] February 26, 2017 – The catalyst used in the alkylation unit is available at http://bbs.hcbbs.com/thread-1751383-1-1.html (Source: Haichuan Network). [Daily Question No. 2] February 27, 2017 – When using gas to displace air, the oxygen content in the gas inside the equipment is considered acceptable if it is no more than ( ). http://bbs.hcbbs.com/thread-1751426-1-1.html (Source: Haichuan Net) [Daily Question No. 3] February 28, 2017: What is the melting point of 98% sulfuric acid? http://bbs.hcbbs.com/thread-1751485-1-1.html (Source: Haichuan Network)] [Daily Question No. 4] On March 1, 2017, what process took place on the packing in the methanol recovery tower? http://bbs.hcbbs.com/thread-1751992-1-1.html (Source: Haichuan Network) [Daily Question No. 5] On March 2, 2017, during a distillation process, the material balance follows ( ). http://bbs.hcbbs.com/thread-1752345-1-1.html (Source: Haichuan Net) [Daily Question No. 6] On March 3, 2017, the “four understandings” within the concept of “four understandings and three skills” refer to: (), (), (), () ； http://bbs.hcbbs.com/thread-1758455-1-1.html (Source: Haichuan Net) [Daily Question No. 7] March 4, 2017: The wind-operated valve means that it （ ） when there is wind, and it （ ） when there is no wind. http://bbs.hcbbs.com/thread-1758703-1-1.html (Source: Haichuan Net) [Daily Question No. 8] On March 5, 2017, the methods of heat transfer are divided into ( ), ( ), and ( ). http://bbs.hcbbs.com/thread-1758890-1-1.html (Source: Haichuan Net) [Daily Question No. 9] As of March 6, 2017, list the distillation equipment along with the three necessary conditions for its operation: ( ) ( ) ( ). http://bbs.hcbbs.com/thread-1759107-1-1.html (Source: Haichuan Network) [Daily Question No. 10] March 7, 2017: The ( ) in C4 raw materials contains impurities and metal ions, which must be strictly controlled. http://bbs.hcbbs.com/thread-1759380-1-1.html (Source: Haichuan Network) [Daily Question No. 11] On March 8, 2017, what are the explosive limits of propylene in air? http://bbs.hcbbs.com/thread-1759731-1-1.html (Source: Haichuan Net) [Daily Question No. 12] On 3/9/2017, the ( ) of gases in water generally increases in a ( ) relationship as pressure increases. http://bbs.hcbbs.com/thread-1760073-1-1.html (Source: Haichuan Net) [Daily Question No. 13] On 3/10/2017, the boiling point of methanol was ( )°C, and the boiling point of MTBE was ( )°C. http://bbs.hcbbs.com/thread-1760500-1-1.html (Source: Haichuan Network) [Daily Question No. 14] On March 11, 2017, at a certain temperature, the state in which the evaporation rate and condensation rate of a substance’s liquid are equal is called the gas-liquid equilibrium state. The gas present at this time is referred to as ( ) gas. http://bbs.hcbbs.com/thread-1760840-1-1.html (Source: Haichuan Net) [Daily Question No. 15] On 3/12/2017, it is strictly prohibited to operate equipment in ( ), ( ), ( ), or under overload conditions. http://bbs.hcbbs.com/thread-1760960-1-1.html (Source: Haichuan Network) [Daily Question No. 16] 3/13/2017 The molecular formula of hydrogen sulfide is ( ), and it is a ( ) gas in nature. http://bbs.hcbbs.com/thread-1761115-1-1.html (Source: Haichuan Network) [Daily Question No. 17] On March 14, 2017, in a system consisting of two phases, the phenomenon where components become concentrated at the interface between the two phases is called ( ). http://bbs.hcbbs.com/thread-1761454-1-1.html (Source: Haichuan Net) [Daily Question No. 18] March 15, 2017: Methyl tert-butyl ether is a type of ( ) gasoline additive. http://bbs.hcbbs.com/thread-1761837-1-1.html (Source: Haichuan Net) [Daily Question No. 19] March 16, 2017: Toxic substances can be classified according to their chemical structure into: ( ) and ( ). http://bbs.hcbbs.com/thread-1762182-1-1.html (Source: Haichuan Net) [Daily Question No. 20] March 17, 2017. The function of reflux is to provide liquid-phase reflux to the tower trays, thereby enabling the gas and liquid phases to fully achieve the purposes of ( ) and ( ). http://bbs.hcbbs.com/thread-1762516-1-1.html (Source: Haichuan Network) [Daily Question No. 21] On March 18, 2017, the three major balances in distillation operations are ( ), ( ), and ( ). http://bbs.hcbbs.com/forum-227-1.html (Source: Haichuan Network) [Daily Question No. 22] March 19, 2017. The necessary conditions for combustion are: ( ), ( ), ( ). http://bbs.hcbbs.com/thread-1763032-1-1.html (Source: Haichuan Net) [Daily Question No. 23] March 20, 2017: The temperature of the saturated gas at the moment when the first drop of liquid appears as the mixed gas begins to condense. It is called the ( ) of this mixture at that pressure. http://bbs.hcbbs.com/thread-1763179-1-1.html (Source: Haichuan Net) [Daily Question No. 23] March 21, 2017: Under a certain pressure, when a liquid mixture is heated to a certain temperature, the temperature of the first bubble that appears in the liquid is called ( ). http://bbs.hcbbs.com/thread-1763505-1-1.html (Source: Haichuan Net) [Daily Question No. 24] March 22, 2017: Common flow velocity and flow rate meters include ( ), ( ), and ( ). http://bbs.hcbbs.com/thread-1763903-1-1.html (Source: Haichuan Network) [Daily Question No. 25] 2017.3.23 The density of a gas changes with changes in ( ) and ( ). http://bbs.hcbbs.com/thread-1764203-1-1.html (Source: Haichuan Net) [Daily Question No. 26] On 3/24/2017, the amount of fluid that passes through any cross-section of a pipe per unit of time is called ( ). http://bbs.hcbbs.com/thread-1764517-1-1.html (Source: Haichuan Net) [Daily Question No. 27] March 25, 2017: When the saturated vapor pressure of a pure substance in liquid form is equal to the external pressure, the liquid will ( ). http://bbs.hcbbs.com/thread-1764859-1-1.html (Source: Haichuan Net) [Daily Question No. 28] March 26, 2017: The highest temperature allowed for gas liquefaction is referred to as ( ). http://bbs.hcbbs.com/thread-1765105-1-1.html (Source: Haichuan Net) 【Daily Question No. 29】March 27, 2017: Condensation is the process by which a substance changes from a gaseous state to ( ). http://bbs.hcbbs.com/thread-1765400-1-1.html (Source: Haichuan Net) 【Daily Question No. 30】March 28, 2017: Space velocity refers to the amount of ( ) that passes through a unit of catalyst per hour. http://bbs.hcbbs.com/thread-1765705-1-1.html (Source: Haichuan Net) [Daily Question No. 31] March 29, 2017: What is the molecular formula of propylene? http://bbs.hcbbs.com/thread-1765961-1-1.html (Source: Haichuan Net) [Daily Question No. 32] March 30, 2017: What factors affect the space velocity of isomerization reactions? ( ) http://bbs.hcbbs.com/thread-1766277-1-1.html (Source: Haichuan Network) [Daily Question No. 33] On March 31, 2017, under normal temperature and pressure, propylene and propane exist in a ( ) state. http://bbs.hcbbs.com/thread-1766591-1-1.html (Source: Haichuan Net) [Daily Question No. 34] On April 1, 2017, when a person comes into contact with benzene, they should immediately remove the clothes that were in contact with benzene and wash their skin with ( ). http://bbs.hcbbs.com/thread-1766891-1-1.html (Source: Haichuan Net) 【Daily Question No. 35】On April 2, 2017, when working in confined spaces, entry is prohibited if the oxygen level in the area is below ( ), to avoid suffocation accidents. http://bbs.hcbbs.com/thread-1767114-1-1.html (Source: Haichuan Net) 【Daily Question No. 36】On April 3, 2017, as the temperature rises, the volume of oil products increases, while their density decreases. http://bbs.hcbbs.com/thread-1767285-1-1.html (Source: Haichuan Net) [Daily Question No. 37] Before introducing steam on April 4, 2017, pay attention to ( ) in order to prevent water hammer and damage to the equipment. http://bbs.hcbbs.com/thread-1767435-1-1.html (Source: Haichuan Network) [Daily Question No. 38] April 5, 2017. The characteristics of liquefied petroleum gas produced by catalytic cracking are ( ) and a very high content of isobutane. http://bbs.hcbbs.com/thread-1767609-1-1.html (Source: Haichuan Net) 【Daily Question No. 39】 April 6, 2017: What is the main component of liquefied gas? http://bbs.hcbbs.com/thread-1767892-1-1.html (Source: Haichuan Net) [Daily Question No. 40] As of April 7, 2017, the coefficient of thermal expansion of liquefied gas is （ ） times that of water. http://bbs.hcbbs.com/thread-1768217-1-1.html (Source: Haichuan Net) 【Daily Question No. 41】 April 8, 2017: The distillation process is a （ ） process. http://bbs.hcbbs.com/thread-1768571-1-1.html (Source: Haichuan Network) [Daily Question No. 42] April 9, 2017: Propylene is a gas with a hydrocarbon-like odor; its explosion limit is ( ), and it is classified as a material posing a risk of Class A fires. http://bbs.hcbbs.com/thread-1768792-1-1.html (Source: Haichuan Net) [Daily Question No. 43] April 10, 2017: The most common method for separating mixtures is ( ). http://bbs.hcbbs.com/thread-1768958-1-1.html (Source: Haichuan Net) [Daily Question No. 44] April 11, 2017: What is the explosion limit of propane? http://bbs.hcbbs.com/thread-1769225-1-1.html (Source: Haichuan Network) [Daily Question No. 44] On April 12, 2017, the temperature at which oil changes from a solid state to a liquid state is called ( ). http://bbs.hcbbs.com/thread-1769572-1-1.html (Source: Haichuan Net) [Daily Question No. 45] On April 13, 2017, what was the approximate temperature distribution inside a continuous distillation column? http://bbs.hcbbs.com/thread-1769999-1-1.html (Source: Haichuan Net) [Daily Question No. 46] April 14, 2017: The purpose of using steam to displace air is to remove the air from within the equipment, thereby reducing the oxygen content in the gases inside the equipment ( ), so as to ensure full operational capacity. http://bbs.hcbbs.com/thread-1770311-1-1.html (Source: Haichuan Network) [Daily Question No. 47] April 15, 2017. The coefficient of thermal expansion of liquefied gas is ( ) times that of water. http://bbs.hcbbs.com/thread-1770609-1-1.html (Source: Haichuan Network) [Daily Question No. 48] On April 16, 2017, propylene oxide was produced primarily from ( ) as raw material. http://bbs.hcbbs.com/thread-1770611-1-1.html (Source: Haichuan Net) 【Daily Question No. 49】April 17, 2017: What does Pg represent? http://bbs.hcbbs.com/thread-1771003-1-1.html (Source: Haichuan Net) 【Daily Question No. 50】April 18, 2017: Distillation is a type of ______ process. http://bbs.hcbbs.com/thread-1771330-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 51] On April 19, 2017, in the classification of distillation, based on different distillation methods, it can be divided into three main categories: ( ), ( ), and ( ). http://bbs.hcbbs.com/thread-1771558-1-1.html (Source: Haichuan Chemical Engineering Forum) [Daily Question No. 52] April 20, 2017. At room temperature and normal pressure, liquefied gas exists in a gaseous state. () http://bbs.hcbbs.com/thread-1771961-1-1.html (Source: Haichuan Chemical Engineering Forum) [Daily Question No. 53] April 21, 2017. The molecular formula of propylene is C3H8. () http://bbs.hcbbs.com/thread-1772308-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 54] On April 22, 2017, in the classification of distillation processes, based on the operating pressure, they can be divided into ( ), ( ), and ( ). http://bbs.hcbbs.com/thread-1772683-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 55] April 23, 2017: The process in which a portion of a liquid vaporizes and escapes from the liquid is called (). http://bbs.hcbbs.com/thread-1772901-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 56] On April 24, 2017, the ways in which toxins can enter the human body are ( ), ( ), ( ). http://bbs.hcbbs.com/thread-1773099-1-1.html (Source: Haichuan Chemical Engineering Forum) [Daily Question No. 57] April 25, 2017. At room temperature and pressure, liquefied gas is heavier than air ( ). http://bbs.hcbbs.com/thread-1773354-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 58] April 26, 2017: Inhaling high-concentration liquefied gas can cause dizziness, vomiting; in severe cases, it can lead to suffocation and death. http://bbs.hcbbs.com/thread-1773664-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 59] April 27, 2017: The main purpose of the deethanizer is to remove ethane and ethylene from liquefied gas. http://bbs.hcbbs.com/thread-1773667-1-1.html (Source: Haichuan Chemical Industry Forum) [Question of the Day No. 60] April 28, 2017: Wet air can be considered a mixture of water vapor and dry air. http://bbs.hcbbs.com/thread-1774212-1-1.html (Source: Haichuan Chemical Engineering Forum) [Daily Question No. 61] April 29, 2017. Humidity can also be referred to as absolute humidity. (True or False) http://bbs.hcbbs.com/thread-1774533-1-1.html (Source: Haichuan Chemical Forum) [Daily Question No. 62] On April 30, 2017, the tower malfunction occurred due to a high gas-phase load; this caused heavier components within the tower to be carried to the top of the tower, resulting in substandard product quality. (True/False question) http://bbs.hcbbs.com/thread-1774674-1-1.html (Source: Haichuan Chemical Industry Forum)

This post was last edited by LQ198619 on 2017-6-5 07:14. Summary post of daily questions for May 2017 【Daily Question No. 63】 May 1, 2017: Water and alcohol vaporize at the same temperature; alcohol evaporates more easily than water, which indicates that its saturated vapor pressure is higher than that of water. (Give a bonus for using a ultimate ability) http://bbs.hcbbs.com/thread-1774779-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 64] On May 2, 2017, a liquid boils when its saturated vapor pressure is greater than the external pressure. (True/False question) http://bbs.hcbbs.com/thread-1774952-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 65] As of May 3, 2017, plate towers can be mainly classified into ( ), ( ), and ( ) based on the structure of their plates. (Fill-in-the-blank question) http://bbs.hcbbs.com/thread-1775358-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question No. 66】On May 4, 2017, the process of heating a solution to cause part of it to vaporize, and then guiding the vapor out for condensation is called ( ). (Fill-in-the-blank question) http://bbs.hcbbs.com/thread-1775359-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 67] On May 5, 2017, the process of separating a mixture into relatively pure components by carrying out multiple instances of partial vaporization and partial condensation is called (). (Fill-in-the-blank question) http://bbs.hcbbs.com/thread-1775361-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day, Question No. 68] May 6, 2017. There are many types of packings used in packed towers; the main types of packings include ( ), ( ), ( ), ( ), etc. (Fill-in-the-blank question) http://bbs.hcbbs.com/thread-1775362-1-1.html (Source: Haichuan Chemical Engineering Forum) [Daily Question No. 70] 5/7/2017 The distillation process is a process in which mass transfer occurs through multiple vaporizations and multiple ________. Fill-in-the-blank question: http://bbs.hcbbs.com/thread-1776324-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 69] May 8, 2017. The function of a steam trap is ( ). Fill-in-the-blank question: http://bbs.hcbbs.com/thread-1776322-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 70] As per the continuity of the operation process, distillation processes can be divided into （） distillation and （） distillation as two types of processes. Fill-in-the-blank question: http://bbs.hcbbs.com/thread-1777008-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 71] May 10, 2017. Simple distillation involves heating a solution to cause part of it to ( ), and then guiding the steam out for ( ). Fill-in-the-blank question: http://bbs.hcbbs.com/thread-1777318-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day, No. 72] May 11, 2017. There are two ways of vaporization, namely ( ) and ( ). Fill-in-the-blank question: http://bbs.hcbbs.com/thread-1777702-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 73] On May 12, 2017, heat transfer that occurs through relative displacement due to fluid flow is called ( ). It comes in two forms: ( ) and ( ). Fill-in-the-blank question: http://bbs.hcbbs.com/thread-1777703-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 74] May 13, 2017: The compression ratio is the ratio of the compressor’s ( ) to its ( ). Fill-in-the-blank questions: http://bbs.hcbbs.com/thread-1777705-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 75] The vaporization phenomenon that occurs on the surface of a liquid is called (), while the vaporization phenomenon that occurs both inside and on the surface of a liquid is called (). Fill-in-the-blank question: http://bbs.hcbbs.com/thread-1777706-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day, No. 76] May 15, 2017. Based on their suction method, centrifugal pumps can be classified into ( ) and ( ) categories. http://bbs.hcbbs.com/thread-1778726-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 77] May 16, 2017: The function of the impeller in a centrifugal pump is to transfer ( ) to the liquid, thereby increasing both the ( ) and ( ) of the fluid. http://bbs.hcbbs.com/thread-1778725-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 78] As of May 17, 2017, centrifugal pump impellers can generally be divided into three types based on their structure: (), (), and (). http://bbs.hcbbs.com/thread-1778724-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 79] May 18, 2017: What does DCS mean? http://bbs.hcbbs.com/thread-1780483-1-1.html(Source: Haichuan Chemical Forum) [Daily Question No. 80] On the DCS operation screen, MAN means ________, while AUTO means ___________. http://bbs.hcbbs.com/thread-1780482-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 81] May 20, 2017. Which situation is a 1211 fire extinguisher suitable for? http://bbs.hcbbs.com/thread-1781178-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 82] As of May 21, 2017, the energy source used in pneumatic instruments is _______, and the standard signal is _______. http://bbs.hcbbs.com/thread-1781179-1-1.html (Source: Haichuan Chemical Engineering Forum) [Daily Question No. 83] On May 22, 2017, in an automatic control system, the larger the integral time of the controller, the _________ its integral action is. http://bbs.hcbbs.com/thread-1781180-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 84] May 23, 2017: In production, it is required that the transition process of the automatic control system must be a _________ oscillatory process. http://bbs.hcbbs.com/thread-1781181-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 85] On May 24, 2017, before using an oxygen respirator, it should be checked that the oxygen pressure is greater than ( ) atm. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1782349 (Source: Haichuan Chemical Industry Forum) [Daily Question No. 86] On May 25, 2017, the setting pressure of a safety valve is _________ times the operating pressure of the pressure vessel. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1782724 (Source: Haichuan Chemical Industry Forum) 【Daily Question No. 87】May 26, 2017: The function of I in the instrument PIC-200 on the process flow diagram is… http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1782725 (Source: Haichuan Chemical Industry Forum) 【Daily Question No. 88】May 27, 2017: As long as the lower explosive limit of the combustible material is reached, an explosion will occur upon contact with an open flame. ( ) http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1782727 (Source: Haichuan Chemical Industry Forum) 【Daily Question No. 89】On May 28, 2017, in automatic control diagrams, TC represents ______ type of instrument. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1783746 (Source: Haichuan Chemical Engineering Forum) [Daily Question No. 90] May 29, 2017. The part where the temperature is highest in an atmospheric distillation column is ______. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1783749 (Source: Haichuan Chemical Industry Forum) [Daily Question No. 91] On 5/30/2017, when the processing volume increases, the distillation temperatures at the top of the distillation tower and along the side streams correspondingly ______. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1783747 (Source: Haichuan Chemical Industry Forum) [Daily Question No. 92] May 31, 2017: When it is necessary to transmit the temperature of an object being measured over a long distance, the commonly used temperature measurement instrument is ______. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1783748 (Source: Haichuan Chemical Industry Forum Website)

This post was last edited by LQ198619 on 2017-6-30 at 20:28. Summary post of daily questions for June 2017 – Daily Question, Question No. 93: On 2017.6.1, when the concentration of flammable substances in the air is higher than the upper explosion limit, no explosion occurs, but combustion may take place. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1784483 (Source: Haichuan Chemical Industry Forum) [Daily Question No. 94] June 2, 2017: Static electricity can cause explosions, fires, and personal injuries. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1784478 (Source: Haichuan Chemical Industry Forum) [Daily Question No. 95] On June 3, 2017, entering equipment tanks or other devices for maintenance work requires obtaining a hot work permit. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1784477 (Source: Haichuan Chemical Industry Forum) [Daily Question No. 96] June 4, 2017: When the skin comes into contact with acids or alkalis, it should be washed immediately with clean water. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1784481 (Source: Haichuan Chemical Industry Forum) [Daily Question] June 5, 2017: ( ) and ( ) are effective methods for liquefying gases. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1785724 (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.6 http://bbs.hcbbs.com/thread-1785727-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.7 http://bbs.hcbbs.com/thread-1785728-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.8 http://bbs.hcbbs.com/thread-1785729-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.9 http://bbs.hcbbs.com/thread-1789639-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.10 http://bbs.hcbbs.com/thread-1789640-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.11 http://bbs.hcbbs.com/thread-1789641-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.12 http://bbs.hcbbs.com/thread-1789643-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.13 http://bbs.hcbbs.com/thread-1797328-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.14 http://bbs.hcbbs.com/thread-1797329-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.15 http://bbs.hcbbs.com/thread-1797330-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.16 http://bbs.hcbbs.com/thread-1797331-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.17 http://bbs.hcbbs.com/thread-1798493-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.18 http://bbs.hcbbs.com/thread-1798494-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.19 http://bbs.hcbbs.com/thread-1798497-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.20 http://bbs.hcbbs.com/thread-1799128-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.21 http://bbs.hcbbs.com/thread-1799130-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.22 http://bbs.hcbbs.com/thread-1799131-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.23 http://bbs.hcbbs.com/thread-1799133-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.24 http://bbs.hcbbs.com/thread-1798496-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.25 http://bbs.hcbbs.com/thread-1800372-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.26 http://bbs.hcbbs.com/thread-1800373-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.27 http://bbs.hcbbs.com/thread-1800374-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.28 http://bbs.hcbbs.com/thread-1800375-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.29 http://bbs.hcbbs.com/thread-1801287-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] 2017.6.30 http://bbs.hcbbs.com/thread-1801290-1-1.html (Source: Haichuan Chemical Industry Forum)

This post was last edited by LQ198619 on 2017-7-31 00:21. Summary post of daily questions for July 【Daily Question】2017.7.1 http://bbs.hcbbs.com/thread-1801289-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.2 http://bbs.hcbbs.com/thread-1801288-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.3 http://bbs.hcbbs.com/thread-1802197-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.4 http://bbs.hcbbs.com/thread-1802198-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.5 http://bbs.hcbbs.com/thread-1802199-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.6 http://bbs.hcbbs.com/thread-1802200-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.7 http://bbs.hcbbs.com/thread-1803141-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.8 http://bbs.hcbbs.com/thread-1803142-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.9 http://bbs.hcbbs.com/thread-1803143-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.10 http://bbs.hcbbs.com/thread-1803144-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.11 http://bbs.hcbbs.com/thread-1804326-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.12 http://bbs.hcbbs.com/thread-1804327-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.13 http://bbs.hcbbs.com/thread-1804328-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.14 http://bbs.hcbbs.com/thread-1804329-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.15 http://bbs.hcbbs.com/thread-1805543-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.16 http://bbs.hcbbs.com/thread-1805544-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.17 http://bbs.hcbbs.com/thread-1805545-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.18 http://bbs.hcbbs.com/thread-1805546-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.19 http://bbs.hcbbs.com/thread-1806529-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.20 http://bbs.hcbbs.com/thread-1806531-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.21 http://bbs.hcbbs.com/thread-1806530-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.22 http://bbs.hcbbs.com/thread-1806532-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.23 http://bbs.hcbbs.com/thread-1807608-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.24 http://bbs.hcbbs.com/thread-1807609-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.25 http://bbs.hcbbs.com/thread-1807610-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.26 http://bbs.hcbbs.com/thread-1807611-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.27 http://bbs.hcbbs.com/thread-1808578-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.28 http://bbs.hcbbs.com/thread-1808577-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.29 http://bbs.hcbbs.com/thread-1808576-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.30 http://bbs.hcbbs.com/thread-1808574-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】2017.7.31 http://bbs.hcbbs.com/thread-1810357-1-1.html (Source: Haichuan Chemical Forum)

This post was last edited by LQ198619 on August 20, 2017, at 22:18. Summary thread for daily questions in August.
[Daily Question] August 1, 2017: http://bbs.hcbbs.com/thread-1810358-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 2, 2017: http://bbs.hcbbs.com/thread-1810360-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 3, 2017: http://bbs.hcbbs.com/thread-1810361-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 4, 2017: http://bbs.hcbbs.com/thread-1811607-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 5, 2017: http://bbs.hcbbs.com/thread-1811608-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 6, 2017: http://bbs.hcbbs.com/thread-1811609-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 7, 2017: http://bbs.hcbbs.com/thread-1811610-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 9, 2017: http://bbs.hcbbs.com/thread-1814005-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 10, 2017: http://bbs.hcbbs.com/thread-1813599-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 11, 2017: http://bbs.hcbbs.com/thread-1813930-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 12, 2017: http://bbs.hcbbs.com/thread-1826051-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 13, 2017: http://bbs.hcbbs.com/thread-1826050-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 14, 2017: http://bbs.hcbbs.com/thread-1826049-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 15, 2017: http://bbs.hcbbs.com/thread-1826048-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 16, 2017: http://bbs.hcbbs.com/thread-1826769-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 17, 2017: http://bbs.hcbbs.com/thread-1826770-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 18, 2017: http://bbs.hcbbs.com/thread-1826771-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 19, 2017: http://bbs.hcbbs.com/thread-1826772-1-1.html (Source: Haichuan Chemical Engineering Forum)
[Daily Question] August 20, 2017: http://bbs.hcbbs.com/thread-1828342-1-1.html (Source: Haichuan Chemical Engineering Forum)

This post was last edited by Green Lotus on 2017-11-30 at 10:43. Summary of answers for the [Daily Question] in November 2017: [Daily Question] – Petrochemical Deep Processing Version, 2017.11.06; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.07; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.08; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.09; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.10; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.11; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.12; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.13; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.14; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.15; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.16; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.17; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.18; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.19; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.20; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.21; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.22; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.23; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.24; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.25; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.26; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.27; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.28; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.29; [Daily Question] – Petrochemical Deep Processing Version, 2017.11.30