Low compression pressure in a diesel engine can be caused by_____________.

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  A . low water in the expansion tank B . improperly seated valves C . low fuel oil pressure D . worn or broken cylinder liner sealing ring

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• Low compression in a diesel engine can be caused by （）

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• Low compression in a diesel engine could be caused by（）

  A . worn or broken cylinder liner sealing rings B . high cooling water temperature C . worn or broken piston rings D . low fuel oil pressure

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• Low compression pressure in a diesel engine is caused by___________.

  A.low water in the expansion tank B.improperly seated valves C.low fuel oil pressure D.worn or broken cylinder liner sealing rings

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• When the pressure gets low, the boiling-point becomes low. 气压变低，沸点就变低。

  A．omission B．combination C．addition D．obverse

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