English — Forum #723 (Page 407/642)

1. What are the roles of bacterial aggregates, protozoa, and micrometazoa in water treatment? - HCBBS Forum
2. Efforts in identifying safety hazards should focus on precision - HCBBS Forum
3. Is the oil era coming to an end? - HCBBS Forum
4. 【Daily Topic】【Live Version 20151221】 - HCBBS Forum
5. Open a gas station! - HCBBS Forum
6. 20151223 One question per day - HCBBS Forum
7. Questions regarding the leakage test for atmospheric pressure vessels - HCBBS Forum
8. 【Daily Question No. 49】December 21, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
9. Who reports to whom, PMC or the supervisor? - HCBBS Forum
10. Are there any standard codes for determining the minimum flow pipeline of a centrifugal pump? Are there any centrifugal pumps installed? - HCBBS Forum
11. 【Picture of the Day】12.28 How many people can identify the device in this picture? - HCBBS Forum
12. Nominal size and wall thickness of the pipe - HCBBS Forum
13. Reasons for foaming in the circulating cooling water system - HCBBS Forum
14. Who has information on agents for the Dresser-Rand brand? - HCBBS Forum
15. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 396 - HCBBS Forum
16. 【Daily Question】12.21 Multiple-choice question: In chemical pipelines, what flows inside the pipes whose outer surfaces are coated in a silver-white color? ( ) - HCBBS Forum
17. Is the carbon content of coarse slag and fine slag meaningful as a process evaluation indicator? - HCBBS Forum
18. Relationship between tower top extraction rate and tower top product yield - HCBBS Forum
19. 【Daily Question】12.20 Multiple-choice question: Which of the following reasons can cause motor bearings to overheat? - HCBBS Forum
20. HYSYS Introduction PPT English Audio Tutorial - HCBBS Forum
21. Who are the domestic and foreign patent holders for low-temperature methanol washing technology? - HCBBS Forum
22. 【Daily Question】12.28: Determine stress corrosion (3 wealth points for a reply; +3 to -8 wealth points for a correct answer) - HCBBS Forum
23. 【Weekly Topic】【HVAC Version 20151221】 - HCBBS Forum
24. 【Daily Question】12.21 Multiple-choice Question: Characteristics of the liquid level control valve at the bottom of the vacuum distillation tower - HCBBS Forum
25. Selection of material for liquid ammonia pipelines - HCBBS Forum
26. Is there a certificate issued after passing the intermediate professional title assessment? - HCBBS Forum
27. I have a very basic translation question: how do you translate “start and stop”? ? - HCBBS Forum
28. Engineer - HCBBS Forum
29. Problems with the system in the test tubes - HCBBS Forum
30. I’m just trying to stimulate further discussion; I would appreciate it if someone knowledgeable could help upload the technical specifications for the low-pressure, full-blow acid vapor stripping process used in the single-tower systems in Luoyang - HCBBS Forum
31. The Ministry of Industry and Information Technology issues regulatory requirements for the ferroalloy and electrolytic manganese industries - HCBBS Forum
32. What are the advantages and disadvantages of diaphragm-sealed differential pressure transmitters compared to pressure tube types? - HCBBS Forum
33. How to define combustibles in pressure pipelines – Does lubricating oil count as a combustible? - HCBBS Forum
34. For the same pressure level, should an outer ring or an inner ring be used as a shimming for the RF surface? Reason? - HCBBS Forum
35. Properties and uses of various stainless steels - HCBBS Forum
36. I have two chain boilers here, and the smoke from one of them is blue. Does anyone among you know what could be causing this? - HCBBS Forum
37. Regarding the settings for seismic loads in CII - HCBBS Forum
38. How to get rid of chapped lips in winter? - HCBBS Forum
39. First hydrocracking reactor - HCBBS Forum
40. Who can explain the meaning of the voltage correction formula for chlorine engineering electrolyzers? - HCBBS Forum
41. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 393 - HCBBS Forum
42. What is the difference between a canned motor pump and a magnetic drive pump? Where is it suitable for use? - HCBBS Forum
43. Looking for information on the precautions to be taken when renewing ASME approvals (pressure vessel design and manufacturing) - HCBBS Forum
44. 【Daily Topic】【Live Version 20151223】 - HCBBS Forum
45. Furnace brick layout design - HCBBS Forum
46. For the extraction of platinum metal, how is extraction carried out using wet methods? - HCBBS Forum
47. What material is CF8? What material is Ste. made of? - HCBBS Forum
48. In environments with acid mist, the floor and equipment foundations are made of granite; the fluid flowing through the pipes is acidic, and the pipe supports for plastic pipes are fixed in place - HCBBS Forum
49. Fees for project design - HCBBS Forum
50. I’ve always found it tricky to choose a circulation pump for forced-circulation waste heat boilers. Do you have any convenient methods? - HCBBS Forum
51. Best Negative News of 2015 - HCBBS Forum
52. How to distinguish between pressure-bearing and non-pressure-bearing components of a boiler? - HCBBS Forum
53. Environmental Protection Daily Quiz 12.17: Participate for prizes; 3 correct answers and another 3 prizes will be given - HCBBS Forum
54. How much investment is required for wastewater treatment equipment with a processing capacity of 10 tons per day? - HCBBS Forum
55. Technician and Senior Technician Exams - HCBBS Forum
56. Ways to help children build confidence; encouragement is a more effective method to help them succeed - HCBBS Forum
57. Does the injector need a mounting bracket? - HCBBS Forum
58. Environmental Protection Daily Quiz: Distributed on December 25th for Christmas; there’s a prize for participation, plus another 5 prizes for answering 3 questions correctly - HCBBS Forum
59. Material selection for cracking reactors containing a small amount of hydrogen fluoride gas - HCBBS Forum
60. Doubts regarding the renovation of the company’s methanol distillation unit - HCBBS Forum
61. What’s the status of Chitianhua, Chuanhua, and Jianfeng Fertilizer Plants? - HCBBS Forum
62. 【Daily Question】12.28 Multiple-choice question Among the following options, the description regarding the purpose of combined water transport is incorrect... - HCBBS Forum
63. One point per true or false question - HCBBS Forum
64. December 17, Question 122 on Boiler Foundations: True/False question (a certain score will be given to the top 50) - HCBBS Forum
65. Feasibility study on using saturated steam from the dry quenching coke drum as low-pressure steam for alkaline solutions! - HCBBS Forum
66. Shared nitrogen sealing system - HCBBS Forum
67. Coal powder transportation procedure in aerospace gasification processes - HCBBS Forum
68. Environmental Protection Daily Quiz 12.16: Participate for prizes; 3 answers correct and you’ll get another 3 prizes - HCBBS Forum
69. In the slag discharge from the gasification furnace, how is glass fiber formed? And how can the condition of the slag be analyzed? - HCBBS Forum
70. Operational issues during regenerator desulfurization - HCBBS Forum
71. Spend money when in a good mood~ - HCBBS Forum
72. Advantages of using a steam turbine to drive the circulator in the cracking unit! - HCBBS Forum
73. 【Daily Topic】【HVAC Version 20151222】 - HCBBS Forum
74. Is the cooler of the main motor of air-water cooling type? - HCBBS Forum
75. For stainless steel pipes using carbon steel supports, is it necessary to add rubber in between? Is there a standard basis? - HCBBS Forum
76. I really like this sentence - HCBBS Forum
77. 3 types of fruits turn out to be \"catalysts\" for the canceration of stomach diseases” - HCBBS Forum
78. ASME B31.3 Chinese-English Comparison - Exclusive - HCBBS Forum
79. 1tt unit - HCBBS Forum
80. Seek an in-depth explanation of uniformly distributed loads across the span and uniformly distributed loads at the mid-span - HCBBS Forum
81. Problems with feeding fuel oil and fuel gas to the CO burner in MTO units - HCBBS Forum
82. Regarding downstream issues of isobutylene - HCBBS Forum
83. Regarding continuous reforming units - HCBBS Forum
84. Can MMT be hydrogenated? - HCBBS Forum
85. Gas station fuel tanks and areas with open flames or sparks - HCBBS Forum
86. 【Daily Question】12.19 True or False: Steam generators generally use fresh water, so scaling does not occur easily - HCBBS Forum
87. The vibration of the pump bearing is too high. - HCBBS Forum
88. Measurement of vanadium in water samples by tantalum reagent extraction spectrophotometry - HCBBS Forum
89. When simulating ASPEN heat exchangers and selecting different options, the results for heat exchangers of the same specification can vary - HCBBS Forum
90. I’d like to share some experiences on how to effectively improve spoken English in a short period of time. - HCBBS Forum
91. Low-temperature piston pump - HCBBS Forum
92. TRIM Control Logic - HCBBS Forum
93. Can one take the exam to become a certified environmental impact assessment engineer without relevant work experience? - HCBBS Forum
94. HVAC construction quality inspection form - HCBBS Forum
95. 【Daily Question】12.28 Term Explanation: Ash content - HCBBS Forum
96. What material is used to repair ion exchange membranes? ? ? A piece of black transparent film, attached to the membrane - HCBBS Forum
97. How to check relative volatility in Aspen - HCBBS Forum
98. What about the Haichuan Chemicals forum? I seek advice from those who are more experienced - HCBBS Forum
99. How significant is the impact of insufficient straight pipe length required by flow meters? - HCBBS Forum
100. Collected **standards - HCBBS Forum