单项选择题
A.discharge exhaust gases and smoke B.furnish energy to the turbocharger C.reduce engine room noise D.all of the above
Incomplete combustion in a running diesel engine can ca...
单项选择题Incomplete combustion in a running diesel engine can cause piston rings to become stuck as a result of （）
A.residual carbon deposits B.lube oil viscosity breakdown C.uneven heat expansion of the rings D.uneven heat expansion of the piston
A six-cylinder, two-stroke/cycle diesel engine is fitte...
单项选择题A six-cylinder, two-stroke/cycle diesel engine is fitted with a rotary distributing air starting systemThe speed of the rotating distributor disc is （）
A.one-half engine speed B.the same as engine speed C.twice engine speed D.four times engine speed
In the cylinder head of a two-stroke/cycle diesel engin...
单项选择题In the cylinder head of a two-stroke/cycle diesel engine, valves are used for（）
A.air intake B.a fuel outlet C.cooling water inlets D.exhausting combustion gas
