单选题What harmful condition can result if a diesel engine is operated at very light loads for long periods of time?（）Aincreased carbon buildupBburning of intake valvesCexcessive firing pressuresDincreased fuel consumption
单选题
What harmful condition can result if a diesel engine is operated at very light loads for long periods of time?（）
A
increased carbon buildup
B
burning of intake valves
C
excessive firing pressures
D
increased fuel consumption
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