单选题If a hydraulic governor has been refilled with oil, the engine should be operated until it reaches normal temperaturethen the air should be purged, and the（）Arack position should be adjustedBcompensating needle valve should be opened fully compensatingCneedle valve should be adjusted to stabilize operationDspeed limiting device should be adjusted
单选题
If a hydraulic governor has been refilled with oil, the engine should be operated until it reaches normal temperaturethen the air should be purged, and the（）
A
rack position should be adjusted
B
compensating needle valve should be opened fully compensating
C
needle valve should be adjusted to stabilize operation
D
speed limiting device should be adjusted
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