The ideal liquid is an imaginary liquid that is neither viscous nor compressible. ( )
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The relief valve is normally open and the pressure reducing valve is normally closed. ( )
A. 对
B. 错
The selection of hydraulic oil mainly considers its viscosity. ( )
A. 对
B. 错
Sequence valve is a flow control valve ( )
A. 对
B. 错
Without considering leakage, the flow calculated according to the geometric dimensions of the hydraulic pump is called the theoretical flow ( )
A. 对
B. 错