单项选择题

White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）

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

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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