单选题Diesel engine injection lag is caused by（）Acompressibility of the fuelBhigh fuel oil supply flowCscored plunger and barrel packingDexcessive air turbulence
单选题
Diesel engine injection lag is caused by（）
A
compressibility of the fuel
B
high fuel oil supply flow
C
scored plunger and barrel packing
D
excessive air turbulence
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