采油工高级理论知

(907358)偏心配水器主要由工作筒和( )两部分组成。(1.0分)

发布于 2021-02-22 21:09:30

【单选题】
A 撞击筒
B 配水器芯子
C 堵塞器
D 泄油器

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5232557 2023-02-22

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