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Which statement is NOT true?
A.While displacement pump works, volume of the working chamber will increase and decrease alternately
B.A gear pump always has two gears
C.Any vane pump will have a rotor within a ring
D.A balanced vane pump has two outlet ports and they are positioned symmetrically
参考答案
更多 “ Which statement is NOT true?A.While displacement pump works, volume of the working chamber will increase and decrease alternatelyB.A gear pump always has two gearsC.Any vane pump will have a rotor within a ringD.A balanced vane pump has two outlet ports and they are positioned symmetrically ” 相关考题
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