單項選擇題

During extremely cold weather, while starting an engine, it turns too slowly and fails to startThis problem is most likely the result of （）

A.high fuel oil viscosity
B.low fuel oil temperature
C.high lube oil viscosity
D.energized glow plugs

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單項選擇題

Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started?（）

A.Exhaust temperature
B.Lube oil level
C.Lube oil pressure
D.Water level in the expansion tank

單項選擇題

Adjustments to the compensating needle valve in a hydraulic governor should be made with the engine at （）

A.maximum power at a normal load
B.maximum power and load under normal conditions
C.half speed and normal temperature
D.normal operating temperature without a load