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單項(xiàng)選擇題

To guarantee that a reduction gear bearing is receiving proper oil supply, you should check the （）

A.lube oil temperature at the cooler outlet
B.lube oil strainer magnets bearing
C.lube oil temperature
D.lube oil pressure to the bearing

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單項(xiàng)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

單項(xiàng)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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