2018版井下作业工

AB008 油层套管是靠( )坐在表层套管上的。

发布于 2021-02-17 09:01:36

【单选题】
A 采油树
B 环形钢板
C 阀门
D 大四通

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173805655 2023-02-17

这家伙很懒，什么也没写！

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别把生活当作游戏，谁游戏人生，生活就惩罚谁，这不是劝诫，而是--规则！

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