单选题The purpose of compressing the air within the cylinder of a diesel engine is to （）Aproduce the heat for ignitionBdecrease injection lagCincrease ignition delayDaid in exhausting burnt gases
单选题
The purpose of compressing the air within the cylinder of a diesel engine is to （）
A
produce the heat for ignition
B
decrease injection lag
C
increase ignition delay
D
aid in exhausting burnt gases
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