單項選擇題

If the jacket water temperature in an auxiliary diesel engine cooling system is lower than normal, the probable cause is （）

A.air binding of the engine cooling system
B.a cracked water cooled exhaust manifold
C.blockage in the heat exchanger
D.faulty operation of the thermostat

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單項選擇題

One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an （）

A.decrease in ignition lag
B.increase in fuel economy
C.reduction in lube oil viscosity
D.increase in cylinder misfiring

單項選擇題

The plunger in a jerk pump is rotated until the release port is uncoveredIf the port remains uncovered all of the time, which of the listed operations will occur?（）

A.No fuel will be delivered
B.The maximum effective stroke will be attained
C.The fuel delivered to the cylinder will be excessive
D.The injection nozzle will overheat and carbonize

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If the jacket water temperature in an auxiliary diesel engine cooling system is lower than normal, the probable cause is （）

你可能感興趣的試題

One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an （）

The plunger in a jerk pump is rotated until the release port is uncoveredIf the port remains uncovered all of the time, which of the listed operations will occur?（）

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