單項選擇題White smoke exhausting from a diesel engine can result from ()

A.high exhaust temperature
B.high lube oil temperature
C.low turbo-charger speed
D.low cooling water temperature


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1.單項選擇題White smoke exhausting from an operating diesel engine may indicate ()

A.a cracked liner
B.burning lube oil
C.an overloaded engine
D.insufficient combustion air

2.單項選擇題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

3.單項選擇題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

4.單項選擇題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

5.單項選擇題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