单项选择题
A.clearance between the top of the valve stem and the rocker arm B.compression of the valve springs C.clearance between the valve seat inserts and the head D.out of roundness of the fuel injection cams
Auxiliary diesel engines can be automatically shut down...
单项选择题Auxiliary diesel engines can be automatically shut down as a result of （）
A.low lube oil temperature B.low lube oil pressure C.high exhaust temperature D.high cooling water pressure
Which of the listed conditions can cause a diesel engin...
单项选择题Which of the listed conditions can cause a diesel engine to use too much lube oil?（）
A.Dirty lube oil filter B.Too much piston ring wear C.High lube oil viscosity D.Low lube oil temperature
Which of the following operational conditions will occu...
单项选择题Which of the following operational conditions will occur to the diesel engine lube oil at extremely high temperature?（）
A.The oil oxidizes and forms carbon deposits B.The viscosity increases C.Engine oil consumption decreases D.Lubricating qualities of the oil are enhanced
