问题描述：
[单选]
When the order（）is received from the bridge， the main air stop valve in the starting air line should be shut．
A．stand-by engine
B．full ahead
C．finished with engine
D．full away
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答案解析：无
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答案解析：无
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上一篇：When the starting air valve closes on one cylinder， another starting air valve has（）opened on another cylinder whose piston has just commenced its downward stroke．
下一篇：When the follower is on the base circle of the cam， the pump plunger is at the（）of its stroke．
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