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單項選擇題

Opening of the cylinder （） will admit compressed air into the cylinder.

A.safety valve
B.indicator cock
C.blow-down valve
D.start valve

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單項選擇題

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

單項選擇題

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

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