单项选择题
A.excessively high oil temperatures B.water or moisture contamination C.fuel dilution D.life its cylinder relief vales
In a diesel engine, when refitting piston rings you sho...
In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring groove
A.Ⅰ only B.Ⅱ only C.both Ⅰ and Ⅱ D.neither Ⅰ nor Ⅱ
In a diesel engine, an integral liner is one in which t...
In a diesel engine, an integral liner is one in which the cooling water （） Ⅰ.flows through the cylinder liner jackets Ⅱ.touches the outer side of the liner
A.Ⅰ only B.Ⅱ only C.both Ⅰ and Ⅱ D.neither Ⅰ and Ⅱ
Excessive lube oil consumption can result from worn or ...
单项选择题Excessive lube oil consumption can result from worn or broken（）
A.piston rings B.valve guides C.valve seals D.all of the above
