关于声现象的下列说法中,正确的是:A.发声的物体一定在振动,振动停止后,声音不会立即消失;B.医生用听诊器检查病人身体,是因为听诊器能放大声音;C.人们听不到次声,是因为次声的振动
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![关于声现象的下列说法中,正确的是:A.发声的物体一定在振动,振动停止后,声音不会立即消失;B.医生用听诊器检查病人身体,是因为听诊器能放大声音;C.人们听不到次声,是因为次声的振动](/uploads/image/z/1421871-15-1.jpg?t=%E5%85%B3%E4%BA%8E%E5%A3%B0%E7%8E%B0%E8%B1%A1%E7%9A%84%E4%B8%8B%E5%88%97%E8%AF%B4%E6%B3%95%E4%B8%AD%2C%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF%3AA%EF%BC%8E%E5%8F%91%E5%A3%B0%E7%9A%84%E7%89%A9%E4%BD%93%E4%B8%80%E5%AE%9A%E5%9C%A8%E6%8C%AF%E5%8A%A8%2C%E6%8C%AF%E5%8A%A8%E5%81%9C%E6%AD%A2%E5%90%8E%2C%E5%A3%B0%E9%9F%B3%E4%B8%8D%E4%BC%9A%E7%AB%8B%E5%8D%B3%E6%B6%88%E5%A4%B1%3BB%EF%BC%8E%E5%8C%BB%E7%94%9F%E7%94%A8%E5%90%AC%E8%AF%8A%E5%99%A8%E6%A3%80%E6%9F%A5%E7%97%85%E4%BA%BA%E8%BA%AB%E4%BD%93%2C%E6%98%AF%E5%9B%A0%E4%B8%BA%E5%90%AC%E8%AF%8A%E5%99%A8%E8%83%BD%E6%94%BE%E5%A4%A7%E5%A3%B0%E9%9F%B3%3BC%EF%BC%8E%E4%BA%BA%E4%BB%AC%E5%90%AC%E4%B8%8D%E5%88%B0%E6%AC%A1%E5%A3%B0%2C%E6%98%AF%E5%9B%A0%E4%B8%BA%E6%AC%A1%E5%A3%B0%E7%9A%84%E6%8C%AF%E5%8A%A8)
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