[宜宾二诊]2024届宜宾市普通高中2021级第二次诊断性测试数学.考卷答案

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[宜宾二诊]2024届宜宾市普通高中2021级第二次诊断性测试数学.考卷答案试卷答案

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(1)打开气泵,先取走滑块B,待气流稳定后将滑块A从气垫导轨右侧弹出,测得光电门1的挡光时间小于光电门2的挡光时间,为使导轨水平,可调节左侧底座旋钮,使轨道左端(填“升高”或“降低”)一些。