Catalytic Coking Reformate Blending Version 20190707
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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: Among the following options, which one represents an incorrect scanning principle? ( ) A. First purge the heavy oil pipeline, then the light oil pipeline. B. For heat exchangers, purge the main line first, then the auxiliary line. C. Control valves should be purged on the main line first, then the auxiliary line. D. When purging a three-way valve, it needs to be moved back and forth repeatedly. Answer: C 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.
When cleaning the three-way valve, it should be moved back and forth repeatedly
C. The control valve should first purge the main line and then the auxiliary line
C. The control valve should first purge the main line and then the auxiliary line