【Daily Question】Catalytic Coking Reformate Blending Version 20171120

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This post was last edited by Green Lotus on 2017-11-16 09:41. Participants: Prize of 5 Wealth； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Single-choice question: Molecular diffusion is a phenomenon of mass transfer that occurs due to the random thermal motion of molecules, under conditions of a (　　) difference within a system. A. Temperature B. Pressure C. Concentration D. Velocity of motion Answer: C. Use your fingers to participate – our ultimate goal is for everyone to acquire knowledge. 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. 【Q&A】Summary post for 2017 on the catalytic coking reformed oil blending version: https://bbs.hcbbs.com/thread-1826018-1-1.html 【Daily Question】Summary post for 2017 on the catalytic coking reformed oil blending version: https://bbs.hcbbs.com/thread-1811219-1-1.html