题目内容

The theoretical flow rate of a hydraulic pump is related to its structural size and rotational speed, and has nothing to do with working pressure ()

A. 对
B. 错

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Check valve, relief valve, throttle valve can all be used as back pressure valve ()

A. 对
B. 错

The outlet throttle speed control circuit with speed-regulating valve has only throttle loss and no relief loss ()

A. 对
B. 错

In the inlet throttle control circuit, the speed stiffness is related to the throttle valve flow area A and the load FL, but has nothing to do with the pump outlet pressure pp ( )

A. 对
B. 错

Moist air is a mixture of dry air and water vapor ( )

A. 对
B. 错

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