单选

All of the diesel engine cylinder firing pressures are normal, yet all of the exhaust temperatures are lowWhich of the following situations is responsible for this condition?

A.Excessively early injection timing
B.Combustion knock
C.Leaking piston rings
D.Light load

试题出自试卷《海船船员适任证书三管轮模拟试题2(轮机英语)》

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