单项选择题

Worn diesel engine intake valve guides can result in （）

A.increased engine breathing efficiency
B.excessive valve lash
C.excessive lube oil consumption
D.lower than normal fuel consumption

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单项选择题

If a diesel engine runs roughly, which of the systems listed is most likely to be at fault?（）

A.Fuel
B.Lubricating
C.Cooling
D.Ignition

单项选择题

Excessive piston ring wear in a diesel engine will cause（）

A.high lube oil viscosity
B.increased lube oil consumption
C.low lube oil temperatures
D.high firing pressures

单项选择题

In the voyage, when carrying out abandon ship drill, should be test every time（）.

A.the emergency lighting system for muster and abandon ship
B.air/oil emergency shut-down
C.M-Eemergency operation
D.main/auxiliary steering gear changing