單項選擇題

An emergency diesel generator should automatically shut down in the event of （）

A.dangerous over-speeding
B.a loss of lube oil pressure
C.activation of the fixed CO₂system for the emergency generator space
D.all of the above

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單項選擇題

The purpose of the flywheel is to （）

A.provide energy to operate the engine between power impulses
B.neutralize the primary inertia force of the crankshaft
C.reduce the shock of starting loads on the main bearings
D.prevent the engine from operating at critical speed

單項選擇題

While overhauling a jerk-type fuel pump it is necessary to replace the pump plungerWhich of the parts listed below must also be replaced?（）

A.Delivery check valve
B.Pump barrel
C.Tubing to the injector
D.Cam follower