单项选择题
A.lower the no-load RPMs B.provide more air for combine with the fuel C.increase the no-load RPMs D.provide more fuel combine with the air
Distortion of the spray pattern of a nozzle or injector...
单项选择题Distortion of the spray pattern of a nozzle or injector may be indicated by a/an（）
A.high firing pressure B.overload of that particular cylinder C.smoky exhaust D.cooling water temperature rise
The rate of pressure rise during the period following f...
单项选择题The rate of pressure rise during the period following fuel ignition in a diesel will result in （）
A.valve overlap B.volumetric efficiency C.turbulence of the air change D.fuel efficiency
Higher than normal temperature air passing through the ...
单项选择题Higher than normal temperature air passing through the intake of a diesel engine will result in（）
A.greater overall efficiency B.greater fuel economy C.lower horsepower D.lower compression ratio
