Refining Knowledge (Technology) Daily Question (8) 9.19
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This post was last edited by bingfeng1203 on 2009-9-19 23:17. Everyone is welcome to actively participate in the learning and discussion of professional basic knowledge in the refinery processing technology exchange area! In accordance with the forum’s unified requirements, the maximum score for this activity is 10 Wealth points, and rating charm is prohibited. Friendships and duplicate ratings are also declined. Additionally, for answers using the same IP, only the first post is valid. Be careful when posting; editing is ineffective! Those with different views on the provided answer keys can post discussions the next day. To prevent some members from copying the answers of other members, please hide your posts when answering questions. For specific hiding methods, see: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 I. Multiple-choice questions. 1. During purging and pressure testing, the device’s safety valve manual valve should ( ). A: Fully closed B: Fully open C: Semi-open D: Unchanged 2. The air line of the catalyst system is purged ( ). A. Use air B. Use steam C. Use nitrogen D. No need 3. When a steam turbine experiences a sudden load loss, the axial thrust will ( ). A Suddenly increase B Return to zero C Instantly change direction D Suddenly decrease 4. The three-phase wiring of a three-phase asynchronous motor consists of red, green, and yellow phases; to make the motor rotate in the opposite direction, it is sufficient to ( ). A: Swap the red and yellow lines; B: Swap the red and green lines; C: Swap the yellow and green lines; D: Swap any two phases. 5. In a catalytic cracking unit, for a given riser reactor, with the feed rate remaining constant, increasing the reaction pressure results in which of the following changes? A. Increase in charring rate B. Decrease in dry gas yield C. Slight increase in gasoline and diesel yields D. Decrease in one-pass conversion rate. II. True or False questions. 6. The grade of grease is determined by its cetane number. ( ) 7. Increasing the reaction pressure will increase the work required by the compressor. ( ) 8. When measuring liquid pressure, the pressure gauge should be installed at a point located below the pipeline. When measuring gas pressure, the pressure tapping point should be located at the upper part of the pipeline. ( ) 9. In the event of a fire involving valuable laboratory instruments and equipment, do not use carbon dioxide extinguishers, as they can corrode and damage the equipment and leave residues. ( ) 10. The yield of light oils decreases when the catalyst is contaminated by heavy metals. ( ) Multiple-choice and true/false questions, 10 questions per day; 1 point is awarded for each correct answer. The answers are released at least 16 hours later, and a score is given after they are disclosed. No scoring is provided for those who reply after the answers have been released. Answer: AACDA Wrong Wrong Right Wrong Right
I. Single-choice questions. 1. During purging and pressure testing, the safety valve manual valve of the equipment should ( A ). A: Fully closed B: Fully open C: Semi-open D: Unchanged 2. The air line of the catalyst system is purged (D). A. Use air B. Use steam C. Use nitrogen D. No need 3. When a steam turbine experiences a sudden load drop, the axial thrust will (C). A Suddenly increase B Return to zero C Instantly change direction D Suddenly decrease 4. The three-phase wiring of a three-phase asynchronous motor consists of red, green, and yellow phases; to make the motor rotate in the opposite direction, it is sufficient to (A). A: Swap the red and yellow lines; B: Swap the red and green lines; C: Swap the yellow and green lines; D: Swap any two phases. 5. In a catalytic cracking unit, for a given riser reactor, when the feed rate remains constant and the reaction pressure is increased, which of the following changes is correct? (D) A. Increase in charring rate B. Decrease in dry gas yield C. Slight increase in gasoline and diesel yields D. Decrease in one-pass conversion rate. II. True or False questions. 6. The grade of grease is determined by its cetane number. ( True ) 7. Increasing the reaction pressure will increase the work required by the compressor. ( Wrong ) 8. When measuring liquid pressure, the pressure gauge should be installed at a point located below the pipeline. When measuring gas pressure, the pressure tapping point should be located at the upper part of the pipeline. ( Correct ) 9. In the event of a fire involving valuable laboratory instruments and equipment, do not use carbon dioxide extinguishers, as they can corrode and damage the equipment as well as leave residues. ( True ) 10. The yield of light oil decreases when the catalyst is contaminated by heavy metals. ( Right )
1A； 2A ； 3A ； 4B ； 5A 6 wrong ； 7 wrong ； 8 pairs ； 9 pairs ； 10 pairs
BCBBC FFFFT
B A A C A Wrong Wrong Right Wrong Right
ACACC ××√√√
If a company wants to engage in oil refining, it needs to acquire some knowledge first
acabd wrong wrong right right