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防治噪声的途径

> 下列四个选项中的方法都可以有效地减弱噪声，其中在声源处减弱噪声的是 A.房间墙壁上使用吸音材料 B.在高架路两旁建隔音墙 C.在道路两旁种植花草树木 D.在摩托车上安装消声器

问题：

发布时间：2020-03-13

下列四个选项中的方法都可以有效地减弱噪声，其中在声源处减弱噪声的是

A.房间墙壁上使用吸音材料
B.在高架路两旁建隔音墙
C.在道路两旁种植花草树木
D.在摩托车上安装消声器

参考答案：

提问用户：Hw***KB3

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