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单选题
If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be ()
A

a dirty lube oil strainer

B

internal water leaks

C

an oil suction line restriction

D

excessive wears of the cooling water pump


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考题 单选题Which of the listed conditions can cause a diesel engine to use too much lube oil?()A Dirty lube oil filterB Too much piston ring wearC High lube oil viscosityD Low lube oil temperature

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考题 单选题Excessive lubricating oil consumption in a running diesel engine can be caused by ()A clogged lube oil pipingB excessive valve-guide clearanceC high lube oil viscosityD low lube oil temperature

考题 单选题Which of the following conditions can cause excessive lube oil consumption in a diesel engine?()A Low lube oil temperatureB Dirty lube oil strainerC Low lube oil pressureD High lube oil temperature

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考题 单选题Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?()A Water discharging from the water outlet of the lube oil purifierB Fuel oil discharging from the water outlet of the lube oil purifierC Lube oil discharging from the water outlet of the lube oil purifierD A change in the lube oil viscosity

考题 单选题As to the piston cooling, of the following, which statement is not true?()A Because the piston is exposed to very high temperature, it must be cooledB The lower the piston cooling temperature is, the better it isC Both water and lube oil can be used as coolantD One of the piston cooling methods is vibration cooling, with better effect

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