采油工高级理论知

(907360)异相型游梁式抽油机从( )上看，与常规型游梁式抽油机没有显著的差别。(1.0分)

发布于 2021-02-22 21:09:31

【单选题】
A 外形
B 设计
C 减速箱位置
D 平衡相位角

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jim19970316 2023-02-22

这家伙很懒，什么也没写！

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子豪、

这家伙很懒，什么也没写！

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