单项选择题
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
Combustion knock will most likely occur as a result of ...
单项选择题Combustion knock will most likely occur as a result of using a fuel with（）
A.low ignition quality B.a high volatility C.low ignition delay D.a high cetane number
