单项选择题
A.varying the pump discharge pressure B.varying the pump return pressure C.rotation of the pump plunger D.rotation of the pump barrel
On a diesel engine equipped with a hydraulic speed cont...
单项选择题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
Which of the following adjustments is always required w...
单项选择题Which of the following adjustments is always required whenever the diesel engine governor oil has been drained and renewed?（）
A.speed droop B.compensation C.idle speed setting D.load limit control
Which of the following statements represents an advanta...
单项选择题Which of the following statements represents an advantage of an electromagnetic clutch?（）
A.Large misalignments can be tolerated between the shaft and engine coupling B.Slip is held to a minimum when reversing shaft rotation C.Engine torsion vibrations to the driven shaft are eliminated D.It aids in maintaining power factor
