超星 - Ture or false - 查题吧

判断题

Sequence valve is a flow control valve ( )

A. 对
B. 错

判断题

Without considering leakage, the flow calculated according to the geometric dimensions of the hydraulic pump is called the theoretical flow ( )

A. 对
B. 错

判断题

The essence of the self-priming ability of the hydraulic pump is due to the partial vacuum formed in the oil suction cavity of the pump, and the oil in the oil tank flows into the oil chamber under the action of atmospheric pressure ( )

A. 对
B. 错

判断题

In order to improve the self-priming ability of the pump, the vacuum of the suction port of the pump should be as large as possible ( )

A. 对
B. 错

判断题

The double-acting vane pump can be made into a variable pump ( )

A. 对
B. 错

判断题

The oil suction port of the gear pump is made larger than the pressure oil port in order to reduce the radial unbalance force ( )

A. 对
B. 错

判断题

When the pstion number of the piston pump is an odd number, its flow pulsation rate is smaller than when it is an even number ( )

A. 对
B. 错

判断题

The pressure-limiting variable pump mainly depends on the change of the outlet pressure of the pump to change the flow rate of the pump ( )

A. 对
B. 错

判断题

Compared with gear pump, vane pump and piston pump, piston pump has the highest maximum pressure, gear pump has the lowest volumetric efficiency, and double-acting vane pump has the lowest noise ( )

A. 对
B. 错

判断题

If the leakage of the hydraulic cylinder is not considered, the movement speed of the hydraulic cylinder is only determined by the flow rate in ( )

A. 对
B. 错

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