单项选择题

The exhaust system for a turbocharged two-stroke/cycle diesel engine functions to（）

A.discharge exhaust gases and smoke
B.furnish energy to the turbocharger
C.reduce engine room noise
D.all of the above

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单项选择题

A.residual carbon deposits
B.lube oil viscosity breakdown
C.uneven heat expansion of the rings
D.uneven heat expansion of the piston

单项选择题

A.one-half engine speed
B.the same as engine speed
C.twice engine speed
D.four times engine speed

单项选择题

A.air intake
B.a fuel outlet
C.cooling water inlets
D.exhausting combustion gas