【Daily Question】Catalytic Coking Reformate Blending Version 20180112
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Participation: Reward of 3~5 wealth points； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Multiple-choice question: The fire extinguisher that is least suitable for putting out oil fires is ( ). (A) Foam (B) CO2 (C) Dry powder (D) 1211 Answer: B Your participation is the greatest support for our work. Giving roses to others leaves a pleasant fragrance in one’s own hands. https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answers will be released automatically after two days. “My Device, My Home – Large-Scale Original Photo Sharing Event (Part 2): https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1868167&extra=page%3D1 【Q&A】Summary Post for 2017 on the Catalytic Coking and Reforming Oil Blending Version: https://bbs.hcbbs.com/thread-1826018-1-1.html 【Daily Question】Summary Post for 2017 on the Catalytic Coking and Reforming Oil Blending Version: https://bbs.hcbbs.com/thread-1811219-1-1.html
I think answer B is wrong. Foam fire extinguisher: Turn the extinguisher cylinder upside down ； It is suitable for extinguishing fires involving wood, cotton, paper, etc., but not for electrical or oil fires. Carbon dioxide fire extinguisher: Hold the nozzle with one hand and point it at the source of the fire, then use the other hand to turn on the switch ； It is suitable for extinguishing fires involving valuable instruments and equipment, but cannot be used to extinguish fires involving substances such as potassium, sodium, magnesium, and aluminum metals. Halogenated alkane fire extinguisher (1211): First pull out the pin, then grip the handle switch; the push rod opens the seal valve, and the agent is ejected from the nozzle under ammonia pressure ； Suitable for extinguishing fires involving flammable liquids, combustible gases, and electrical equipment. (Note: 1211 fire extinguishers were discontinued for use as of January 1, 2005.) Dry powder fire extinguisher: Remove the safety pin, aim the nozzle at the source of fire, and pull the pull ring to release the extinguishing agent ； Suitable for extinguishing fires involving petroleum products, paints, organic solvents, and electrical equipment.
The fire extinguisher that is least suitable for putting out oil fires is (A). (A) Foam (B) CO2 (C) Dry powder (D) 1211
(D) 1211 Ozone Depleting