声音在均匀空气里传播的过程中()A频率逐渐减小B声速、频率、振幅都不变C声速逐渐减小D振幅逐渐减小
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![声音在均匀空气里传播的过程中()A频率逐渐减小B声速、频率、振幅都不变C声速逐渐减小D振幅逐渐减小](/uploads/image/z/880697-65-7.jpg?t=%E5%A3%B0%E9%9F%B3%E5%9C%A8%E5%9D%87%E5%8C%80%E7%A9%BA%E6%B0%94%E9%87%8C%E4%BC%A0%E6%92%AD%E7%9A%84%E8%BF%87%E7%A8%8B%E4%B8%AD%EF%BC%88%EF%BC%89A%E9%A2%91%E7%8E%87%E9%80%90%E6%B8%90%E5%87%8F%E5%B0%8FB%E5%A3%B0%E9%80%9F%E3%80%81%E9%A2%91%E7%8E%87%E3%80%81%E6%8C%AF%E5%B9%85%E9%83%BD%E4%B8%8D%E5%8F%98C%E5%A3%B0%E9%80%9F%E9%80%90%E6%B8%90%E5%87%8F%E5%B0%8FD%E6%8C%AF%E5%B9%85%E9%80%90%E6%B8%90%E5%87%8F%E5%B0%8F)
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