單項選擇題

In a jerk pump, the amount of fuel that will be forced through the spray nozzle on each upward stroke of the plunger depends on （）

A.the pump supply pressure
B.the slope of the fuel cam
C.how the plunger is rotated
D.the number of sleeve segments engaged with the rack

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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

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

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In a jerk pump, the amount of fuel that will be forced through the spray nozzle on each upward stroke of the plunger depends on （）

你可能感興趣的試題

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

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

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