单项选择题
A properly honed diesel engine cylinder liner will（）
A.prevent piston ring wear
B.shorten the ring break-in period
C.prevent cylinder liner glazing
D.appear slick and glazed
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相关考题
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单项选择题
A diesel engine is supercharged in order to（）
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 -
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 -
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
