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单项选择题
A.fuel dribbling from leaking fuel injectors
B.burning fuel with a high carbon content
C.burning fuel with a high vanadium content
D.burning fuel with a lower sulphur content
单项选择题
A.high combustion temperature
B.high compression pressure
C.cracked cylinder liner
D.fuel with a high vanadium content
单项选择题
A.low combustion temperature
B.a leaking fuel nozzle check valve
C.late fuel injection
D.plugged oil-scraper ring hole
单项选择题
A.the engine is overloaded
B.the engine is cold
C.there is too much lube oil in the cylinders
D.the turbocharger is fouled
单项选择题
A.high exhaust temperature
B.high lube oil temperature
C.low turbo-charger speed
D.low cooling water temperature
单项选择题
A.a cracked liner
B.burning lube oil
C.an overloaded engine
D.insufficient combustion air
单项选择题
A.water supply
B.fuel oil supply
C.lube oil supply
D.exhaust damper
单项选择题
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
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
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