单项选择题
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
A.a shortened ignition delay period
B.a lean fuel/air mixture
C.excess fuel in the combustion chamber
D.rapid vaporization of injected fuel droplets
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相关考题
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单项选择题
Diesel engine control can be obtained by the bridge （）.
A.at any time
B.only after the engine room control station is switched to “bridge control”
C.whenever the secondary station is switched to "bridge control"
D.with the approval of the chief engineer only -
单项选择题
To determine if the lube oil filter elements need changing, （）.
A.open the filter and inspect the elements
B.check the lube oil pump discharge pressure
C.check the lube oil header pressure
D.check the pressure drop across the filter -
单项选择题
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
A.Exhaust and scavenging
B.Scavenging and compression
C.Ignition and expansion
D.Exhaust and compression
