单项选择题

The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）

A.water supply
B.fuel oil supply
C.lube oil supply
D.exhaust damper

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单项选择题

The blower type crankcase ventilation system （）

A.removes combustible gases in the crankcase
B.prevents the formation of combustible gases in the crankcase
C.cools lubricating oil
D.improves cold weather starting

单项选择题

One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to （）

A.increase scavenge air pressure
B.reduce fuel booster pump pressure
C.adjust the fuel rack
D.retard fuel injector timing

单项选择题

What is the best way of stopping an over-speeding diesel engine?（）

A.Disconnect the battery cables from the starting motor
B.Drain the hydraulic fluid from the governor sump
C.Block the flow of cooling air to the radiator
D.Secure the fuel supply and block the air intake