Either a low injection pressure or a leakage of piston rings is able to lead _____.A.a hig

Either a low injection pressure or a leakage of piston rings is able to lead _____.

A.a high exhaust temperature

B.a high smoky exhaust

C.a high output

D.a high compression

请帮忙给出正确答案和分析，谢谢！

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