【Daily Question】August 18: Among the following options, which one represents an incorrect scanning principle?

2015-08-17View Original

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One question per day activity: Among the following options, which one represents the 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 secondary line. C. Control valves should be purged on the main line first, then the secondary line. D. When purging a three-way valve, it should be moved back and forth repeatedly. Answer: C. Control valves should be purged on the main line first, then the secondary line. Please participate actively to win prizes. +5 points for correct answers, +2 points for participation. One time per person only. Close this topic in two days.

Reply #22015-08-17

C. The control valve should first purge the main line and then the auxiliary line

Reply #32015-08-17

The C control valve first sweeps the main line, then the auxiliary line

Reply #42015-08-17

Among the following options, the incorrect scanning principle is (　 c 　). A. First purge the heavy oil pipeline, then the light oil pipeline. B. For heat exchangers, purge the main line first, then the secondary line. C. Control valves should be purged on the main line first, then the secondary line. D. When purging a tee valve, move it back and forth repeatedly

Reply #52015-08-17

C. The control valve should first purge the main line and then the auxiliary line

Reply #62015-08-17

C. The control valve should first purge the main line and then the auxiliary line

Reply #72015-08-18

C. The control valve should first purge the main line and then the auxiliary line

Reply #82015-08-18

C. The control valve should first purge the main line and then the auxiliary line

Reply #92015-08-18

B. For the heat exchanger, clean the main line first, then the secondary line

Reply #102015-08-18

Among the following options, the incorrect scanning principle is (　 C 　). A. First purge the heavy oil pipeline, then the light oil pipeline. B. For heat exchangers, purge the main line first, then the secondary line. C. Control valves should be purged on the main line first, then the secondary line. D. When purging a tee valve, move it back and forth repeatedly

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