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Catalytic Coking Reformate Blending Version 20190720

2019-07-19View Original

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Participation: Prize 1 Wealth; Correct answer: 3 Wealth as a reward. https://bbs.hcbbs.com/static/image/hrline/2.gif https://bbs.hcbbs.com/static/image/hrline/3.gif Multiple-choice question: When a heat exchanger is out of use, it should ( ). A. Open the cold flow bypass valve first. B. Open the hot flow bypass valve first. C. Close the cold flow inlet and outlet valves first. D. Close the hot flow inlet and outlet valves first. Answer: B https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answer will be announced automatically after two days.

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