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单选题
Turbulence in a diesel engine cylinder is of major importance in providing （）.
A
proper fuel metering
B
complete fuel/air mixing
C
minimal fuel penetration
D
proper fuel timing
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increase in engine speedB
increase in cylinder turbulenceC
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swept volume of the cylinderB
inside diameter of the cylinderC
piston displacement in the cylinderD
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单选题Compared to a naturally aspirated diesel engine, a supercharged diesel engine has（）A
a cylinder air charge of higher pressureB
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