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B型地铁列车在开关门操作时由蜂鸣器提前提示，再开闭车门时仍有蜂鸣器提示。（）

发布于 2023-03-18 18:36:18

【单选题】
A 对
B 错

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何小帅 2023-03-18

时间顺流而下，生活逆水行舟。

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