中23

B型地铁列车高度阀安装在车体上，高度阀调整杆上端安装在构架上，下端与水平杠杆的一端相连，水平杠杆的另一端穿过高度阀的转轴。（）

发布于 2023-03-18 18:36:43

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B 错

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LM1998 2023-03-18

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