2018版井下作业工

AB013地面驱动装置是螺杆泵采油系统的主要地面设备,是把动力传递给( ), 使其旋转、实现抽汲原油的机械装置。

发布于 2021-02-17 09:01:49

【单选题】
A 定子
B 抽油杆
C 转子
D 抽油杆防倒转装置

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知与谁同 2023-02-17

记住：你是你生命的船长；走自己的路，何必在乎其它。

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