Single-rod cylinder can realize two directions of movement by hydraulic oil ()
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The filter installed at the suction port of the hydraulic pump usually has higher filtration accuracy than the filter installed at the pressure oil port ( ).
A. 对
B. 错
The pilot-operated check valve can flow forward but can not flow reversely ( ).
A. 对
B. 错
In the volumetric speed control circuit, the pressure relief valve in the main oil circuit plays a safety protection role ( )
A. 对
B. 错
The throttle speed control circuit should have back-pressure in the return oil line to achieve smooth movement ( )
A. 对
B. 错