a cracked liner
burning lube oil
an overloaded engine
insufficient combustion air
第1题：
Engine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .
A.an insufficient speed droop setting
B.an overloaded engine
C.clogged drain holes in the oil control rings
D.complete combustion
第2题：
proper fuel injection
water in the fuel
incomplete combustion
burning of lube oil
第3题：
An indication of an overloaded main propulsion diesel engine is( ).
A.white smoke in the exhaust
B.high exhaust gas pyrometer readings
C.sparks in the exhaust
D.blue smoke in the exhaust
第4题：
high combustion temperature
high compression pressure
cracked cylinder liner
fuel with a high vanadium content
第5题：
water in the fuel
insufficient fuel for combustion
clogged air intake passages
burning lubricating oil
第6题：
What would white exhaust smoke from a diesel engine probably mean ________．
A.Late fuel injection
B.Excess combustion air
C.Dribbling injector tips
D.Excessive lube oil consumption
第7题：
low combustion temperature
a leaking fuel nozzle check valve
late fuel injection
plugged oil-scraper ring hole
第8题：
A smoking exhaust from an operating diesel engine could be caused by( ).
A.low sulfur content in the fuel
B.a loose injector inlet connection
C.late fuel injection
D.high injection pressure
第9题：
an isochronous governor
elastic engine mounts
a vibration damper
a cast iron bed plate with good flexible qualities
第10题：
the engine is overloaded
the engine is cold
there is too much lube oil in the cylinders
the turbocharger is fouled