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【Daily Question】Catalytic Coking Reformate Blending Version (Multiple Choice) 20171027

2017-10-27View Original

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Participation: Prize of 5 Wealth; Correct answer: Reward of 10 wealth points ; Note: This post is valid for 48 hours. Multiple-choice question: Among the following options, the control valve that does not require direction selection is (  ). A. Ball valve B. Single-seat valve C. High-pressure valve D. Sleeve valve Answer: A. Please take a moment to participate; our ultimate goal is for everyone to acquire knowledge. http://bbs.hcbbs.com/static/image/hrline/1.gif http://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answers will be released automatically after two days. 2017: Coal Chemicals – “My Technical Upgrades” http://bbs.hcbbs.com/thread-1786290-1-1.html 【Daily Question】Catalytic coking and reformed oil blending – 2017 summary post http://bbs.hcbbs.com/thread-1811219-1-1.html

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