單項選擇題

If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST （）

A.place standby cooler in operation
B.reduce engine load
C.check thermostatic valve
D.clean sea water strainer

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單項選擇題

Which of the following conditions can cause excessive lube oil consumption in a diesel engine?（）

A.Low lube oil temperature
B.Dirty lube oil strainer
C.Low lube oil pressure
D.High lube oil temperature

單項選擇題

In the common rail system, excessive pressure in the header may be caused by （）

A.improper adjustment of the bypass valve
B.a dribble in the fuel injection nozzle
C.insufficient leak-off through injection nozzle packing
D.a malfunctioning injection nozzle