【Daily Question】Catalytic Coking Reformate Blending Version 20180421

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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: When a centrifugal pump is used to transport high-temperature media containing impurities, what cooling and flushing method is generally chosen for its mechanical seal? (　　) A. Using the medium itself for self-cooling B. Delivering liquid at room temperature from an external source C. Introducing cooled liquid from the pump’s outlet D. Introducing cooled liquid from the high-pressure end of the pump. 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 (Phase 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