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当前学科:齿轮泵
题目:
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关于开一个卸荷槽的齿轮泵的以下说法中错误的是()。
A . A.卸荷槽开在偏吸入口的一侧
B . B.不允许反转使用
C . C.可降低液压冲击和噪声
D . D.不会使容积效率降低
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