单项选择题
A.Between；more commonly B.Among；the most commonly C.Between；not more commonly D.Among；not the most commonly
（） providing lubricating films, oil used in marine dies...
单项选择题（） providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.
A.Except for B.Beside C.Except D.In addition to
（） or air venting arrangement is fitted to the fuel sup...
单项选择题（） or air venting arrangement is fitted to the fuel supply passage.
A.An air pump B.A compressor C.A fuel pump D.A priming
（） neutralizes the acid conditions and（） cleanses the r...
单项选择题（） neutralizes the acid conditions and（） cleanses the rings and grooves.
A.The detergency；the alkalinity B.The alkalinity；the detergency C.The inhabitant；the water D.The additives；the distilled water
