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【Daily Question】Catalytic Coking Reformate Blending Version 20171007

2017-10-07View 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: The main form of friction in commonly used contact mechanical seals is (  ). A. Dry friction B. Liquid friction C. Boundary friction D. Mixed friction Answer: D. Use your fingers 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. Petrochemical Zone — “Creative Ideas for Energy Savings” event (the second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html 2017: Innovations in coal chemical technology – “My technical improvements” http://bbs.hcbbs.com/thread-1786290-1-1.html [Daily Question] Summary post on catalyst-based coking and reformed oil blending for 2017 http://bbs.hcbbs.com/thread-1811219-1-1.html

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