两个人抬东西上楼,前面的费力还是后面的?我要有科学依据的,别凭空想像忽悠啊~
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 03:41:15
![两个人抬东西上楼,前面的费力还是后面的?我要有科学依据的,别凭空想像忽悠啊~](/uploads/image/z/10896187-67-7.jpg?t=%E4%B8%A4%E4%B8%AA%E4%BA%BA%E6%8A%AC%E4%B8%9C%E8%A5%BF%E4%B8%8A%E6%A5%BC%2C%E5%89%8D%E9%9D%A2%E7%9A%84%E8%B4%B9%E5%8A%9B%E8%BF%98%E6%98%AF%E5%90%8E%E9%9D%A2%E7%9A%84%3F%E6%88%91%E8%A6%81%E6%9C%89%E7%A7%91%E5%AD%A6%E4%BE%9D%E6%8D%AE%E7%9A%84%2C%E5%88%AB%E5%87%AD%E7%A9%BA%E6%83%B3%E5%83%8F%E5%BF%BD%E6%82%A0%E5%95%8A%7E)
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