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As for a hydraulic vane pump, which of the followi...

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单选题

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 housing

发布日期：2021-03-22

A.(1) only

B.(2) only

C.(1) and (2)

D.(1),(2)and(3)

标签： hydraulic vane pump contact vanes

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