Which statement is NOT true?A.While displacement p
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
请帮忙给出正确答案和分析，谢谢！
参考解答
41j***780
2024-06-15 00:13:37
正确答案：B
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