单项选择题
A.proper fuel injection B.water in the fuel C.incomplete combustion D.burning of lube oil
Engine operating conditions may be indicated by the col...
单项选择题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
A dark exhaust from a running diesel engine can be caus...
单项选择题A dark exhaust from a running diesel engine can be caused by （）
A.late ignition B.water in the fuel C.high compression temperature D.starting valve stuck open
What color exhaust will be exhibited when a slow speed ...
单项选择题What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）
A.White B.Black C.Blue D.Clear
