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单选题
An over-speed trip stops a diesel engine when the engine （）
A
runs out of fuel
B
has low lubricating oil pressure
C
exceeds a set maximum speed
D
has high cooling water temperature
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单选题An over-speed trip serves to （）A
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over-speed tripD
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单选题（）, the following possible causes should be investigated.A
Should the engine stop without apparent reasonB
The engine should stop without apparent reasonC
The engine stops without apparent reasonD
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BDCD
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openingC
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考题
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考题
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decreased fuel efficiencyB
increased exhaust temperatureC
black smokeD
overspeed trip
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