单项选择题

During the diesel engine running, the water level of FW expansion tank should normally kept in the （） level of glass tube.

A.the highest
B.above 3/4
C.1/2-3/4
D.the lowest

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单项选择题

The normal color of the exhaust gas of the diesel will be （）

A.achromatism or thin gray
B.thin white
C.sky-blue
D.black

单项选择题

During the running of the diesel engine, if the supply of cooling water is interrupted or the temperature of cooling water out of the cylinder is too high, the duty engineer should （）

A.notify the duty officer, reduce the engine speed, take some measures to remove failures
B.notify the duty officer and stop the engine immediately, find the cause and remove failures
C.notify the C/E
D.notify the captain

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If the main engine starting consecutively failed （） times, it should be found the cause before another starting.

A.2
B.3
C.4
D.5