單項選擇題

Auxiliary diesel engines can be automatically shut down as a result of （）

A.low lube oil temperature
B.low lube oil pressure
C.high exhaust temperature
D.high cooling water pressure

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單項選擇題

Which of the listed conditions can cause a diesel engine to use too much lube oil?（）

A.Dirty lube oil filter
B.Too much piston ring wear
C.High lube oil viscosity
D.Low lube oil temperature

單項選擇題

Which of the following operational conditions will occur to the diesel engine lube oil at extremely high temperature?（）

A.The oil oxidizes and forms carbon deposits
B.The viscosity increases
C.Engine oil consumption decreases
D.Lubricating qualities of the oil are enhanced