2018版井下作业工

AB013螺杆泵采油系统主要有节省投资、( )、泵效高、节能、管理费用低等优点。

发布于 2021-02-17 09:01:50

【单选题】
A 地面装置结构简单
B 地面装置结构复杂
C 检泵费用低
D 检泵周期长

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mylove 2023-02-17

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Tate

这家伙很懒，什么也没写！

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