单选题If a main propulsion diesel engine hunts excessively at idle speed, you should （）Aadjusts the idle speed controlBdrain and flushes the governor and replace the oilCadjusts the compensating needle valve
单选题
If a main propulsion diesel engine hunts excessively at idle speed, you should （）
A
adjusts the idle speed control
B
drain and flushes the governor and replace the oil
C
adjusts the compensating needle valve
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