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防治噪声的途径

> 下列有关声现象的说法中，正确的是 A.在街头设置噪声监测仪，属于在传播过程中减弱噪声 B.只要物体在振动，我们就一定能听到声音 C.声音在传播过程中音调会降低 D.声波能传递信息，也能传递能量

问题：

发布时间：2020-03-13

下列有关声现象的说法中，正确的是

A.在街头设置噪声监测仪，属于在传播过程中减弱噪声
B.只要物体在振动，我们就一定能听到声音
C.声音在传播过程中音调会降低
D.声波能传递信息，也能传递能量

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