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B型地铁列车受电弓所有的滚动轴承和拉杆的关节轴承每60个月润滑一次。（）

发布于 2023-03-18 18:36:52

【单选题】
A 对
B 错

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谦陌 2023-03-18

这家伙很懒，什么也没写！

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蓝色多瑙河

这家伙很懒，什么也没写！

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