单项选择题

The device used to store a charged pressure for a hydraulic starting system is called the（）

A.reservoir
B.hand pump
C.accelerator
D.accumulator

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单项选择题

How dose water enter the crankcase of a diesel engine?（）

A.Through the crankcase exhauster
B.As water vapor contained in blow-by
C.Demulsifying lube oil passing through the main bearings
D.Condensation from vapor formed in the expansion tank

单项选择题

Standby or emergency diesel generator day tanks should always be kept full to reduce the possibility of（）

A.sediment contamination
B.fuel filter clogging
C.moisture formation
D.inadequate transfer pump suction head

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If water is found in the crankcase of a diesel engine, the cause may be due to（）

A.a cracked cylinder head
B.a leaky cylinder head gasket
C.a cracked cylinder liner
D.any of the above