单选题If a diesel engines exhaust temperature is abnormally high, the cause could be（）Atoo light of a loadBinjection timing is too earlyCoverloading of the engineDtoo low of a compression ratio
单选题
If a diesel engines exhaust temperature is abnormally high, the cause could be（）
A
too light of a load
B
injection timing is too early
C
overloading of the engine
D
too low of a compression ratio
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