单项选择题
A.safety valve B.indicator cock C.blow-down valve D.start valve
Once all cylinders are firing regularly, （） is shut off...
单项选择题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
Once a scavenge fire is detected, fuel should be shut o...
单项选择题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
Once a scavenge fire is detected the engine （）.A.will b...
单项选择题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
