If a radial piston hydraulic pump fail

1、As for a hydraulic vane pump, which o

As for a hydraulic vane pump, which of the following is in contact with the vanes during working: （）(1)the rotor(2)the pump shaft(3)the external surface of the housingA(1) onlyB(2) onlyC(1) and (2)D(1),(2)and(3)

2、After installing a new hydraulic pump

After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?（）AThe relief valves in the...

3、An axial轴向 piston pump differs from a

An axial轴向 piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned （）.Aradially from the shaft...

4、When a hydraulic vane pump is working

When a hydraulic vane pump is working, which of the following is in contact with the vanes?（）(1) the rotor(2) the internal surface of the housing(3) the external surface of the housingA(1) onlyB(2) onlyC(1) and (2)D(1), (2) and (3)

5、In a radial piston pump, reversal and

In a radial piston pump, reversal and control of fluid flow are accomplished by moving the （）.Acentral valveBradial plungerCfloating ringDcylinder body

6、If a hydraulic pump on a winch acciden

If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because（）.Aa check valve will close that prevent...