【Daily Question】Hydrogen production and hydrogenation technology version 20190613

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Participation: Prize 1 Wealth； Correct answer: Reward of 3 wealth points ； Note: This post is valid for 48 hours. https://bbs.hcbbs.com/static/image/hrline/2.gif Multiple-choice question: Regarding the preheating process of a hot oil pump, which of the following is correct? A. Pump inlet → Pump body → Preheating coil → Pump outlet pipeline B. Pump outlet pipeline → Preheater → Pump body → Pump inlet C. Pump inlet → Pump body → Pump outlet pipeline → Preheating coil D. Preheating coil → Pump body → Pump inlet → Pump outlet pipeline 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.