题目内容
The three-position five-way valve has three working positions and five channels ( )
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The two-stage feed working circuit using two speed regulating valves in series will cause the impact movement of the working parts, so it is rarely used ( )
The fast-moving circuit realized by the differential connection of hydraulic cylinders is generally used for no-load or quick feed ( )
When the system requires good low-speed stability, the volume-throttling speed control loop can be used ( )
In the bypass throttle speed control circuit, if it is found that the relief valve does not overflow when the system is working, it means that the relief valve is faulty ( )
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