单选题Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?（）Acompression must be low for effective spark ignitionBcompression must be low for required horsepower and torque generationCcompression must be low to prevent pre-ignitionDcompression must be low to have effective pre-ignition
单选题
Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?（）
A
compression must be low for effective spark ignition
B
compression must be low for required horsepower and torque generation
C
compression must be low to prevent pre-ignition
D
compression must be low to have effective pre-ignition
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