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單項(xiàng)選擇題

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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單項(xiàng)選擇題

When the follower is on the base circle of the cam, the pump plunger is at the （） of its stroke.

A.top
B.middle
C.bottom
D.any of the above

單項(xiàng)選擇題

When a crankshaft has to be handled outside the engine, it should be carefully supported in a manner which will avoid （） high bending moments on it.

A.compressing
B.interposing
C.imposing
D.pounding

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