If a diesel engines exhaust temperature is abnormally high, the cause could be（）<br>A:too light of a load<br>B:injection timing is too early<br>C:overloading of the engine<br>D:too low of a compression ratio

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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