一列火车以36km\h的速度前进,在距某一隧道口350m处鸣笛,当列车司机听到回声时,火车头据隧道口的距离为(声音当时声速为340m\s)( )A•330m.B•300m.C•270m.D•250m
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![一列火车以36km\h的速度前进,在距某一隧道口350m处鸣笛,当列车司机听到回声时,火车头据隧道口的距离为(声音当时声速为340m\s)( )A•330m.B•300m.C•270m.D•250m](/uploads/image/z/6050582-62-2.jpg?t=%E4%B8%80%E5%88%97%E7%81%AB%E8%BD%A6%E4%BB%A536km%5Ch%E7%9A%84%E9%80%9F%E5%BA%A6%E5%89%8D%E8%BF%9B%2C%E5%9C%A8%E8%B7%9D%E6%9F%90%E4%B8%80%E9%9A%A7%E9%81%93%E5%8F%A3350m%E5%A4%84%E9%B8%A3%E7%AC%9B%2C%E5%BD%93%E5%88%97%E8%BD%A6%E5%8F%B8%E6%9C%BA%E5%90%AC%E5%88%B0%E5%9B%9E%E5%A3%B0%E6%97%B6%2C%E7%81%AB%E8%BD%A6%E5%A4%B4%E6%8D%AE%E9%9A%A7%E9%81%93%E5%8F%A3%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BA%EF%BC%88%E5%A3%B0%E9%9F%B3%E5%BD%93%E6%97%B6%E5%A3%B0%E9%80%9F%E4%B8%BA340m%5Cs%EF%BC%89%EF%BC%88+%EF%BC%89A%26%238226%3B330m.B%26%238226%3B300m.C%26%238226%3B270m.D%26%238226%3B250m)
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