單項(xiàng)選擇題

The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually（）

A.greater than the average exhaust manifold pressure
B.less than the average exhaust manifold pressure
C.greater at the turbine wheel than at the impeller
D.greater at reduced engine speed

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單項(xiàng)選擇題

A sudden decrease in the diesel engine lube oil viscosity could be an indication of（）

A.loss of additives from the lube oil
B.carbon deposits in the lube oil
C.excessive centrifuging
D.excessive fuel dilution

單項(xiàng)選擇題

Dirt lodged on the nozzle valve seat of a fuel injection nozzle will cause（）

A.erosion and cratering of the nozzle orifices
B.fuel leakage into the nozzle drain line
C.fuel leakage before and after injection
D.insufficient fuel delivery though that nozzle

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The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually（）

你可能感興趣的試題

A sudden decrease in the diesel engine lube oil viscosity could be an indication of（）

Dirt lodged on the nozzle valve seat of a fuel injection nozzle will cause（）

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