Catalytic Coking Reformate Blending Version 20180927

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Participation: Prize 1 Wealth； Correct answer: 3 wealth points as reward ； Note: This post is valid for 48 hours. Single-choice question: When reading a liquid-column pressure gauge, in order to reduce parallax, it is necessary to read the position of the liquid surface correctly; if an immersing liquid such as water is used, one must read its (　　). A、The lowest point of a concave surface B、The highest point of a convex surface C、The highest point of a concave surface D、The lowest point of a convex surface Answer: A 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 (Phase 2): https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1868167&extra=page%3D1 【Q&A】Summary of Catalytic Coking and Reforming Oil Blending Data for 2017–2018~~Continuously being updated: https://bbs.hcbbs.com/thread-1826018-1-1.html 【Daily Question】Summary of Catalytic Coking and Reforming Oil Blending Data for 2017–2018~~Continuously being updated: https://bbs.hcbbs.com/thread-1811219-1-1.html