On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the （）<br>A:accumulator spring compressor<br>B:balance piston<br>C:compensating needle valve<br>D:proportional piston

On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the （）
A:accumulator spring compressor
B:balance piston
C:compensating needle valve
D:proportional piston

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