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單項(xiàng)選擇題

Once all cylinders are firing regularly, （） is shut off.

A.the exhaust valve
B.the starting air
C.the inlet valve
D.the fuel oil

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單項(xiàng)選擇題

Once a scavenge fire is detected, fuel should be shut off from the affected cylinders and cylinder lubrication increased （） the risk of seizure.

A.to protect
B.to guard
C.to maximize
D.to minimize

單項(xiàng)選擇題

Once a scavenge fire is detected the engine （）.

A.will be speeded up
B.should be slowed down
C.must slow down
D.have to be slow down

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