下列关于声音的说法中不正确的是 A.凡是人耳所能听到的声音都是由物体的振动产生的b.收音机中的音量开关是调节响度的c.“闻其声知其人 Template




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tomski下列关于声音的说法中不正确的是 a.凡是人耳所能听到的声音都是由物体的振动产生的b.收音机中的音量开关是调节响度的c.“闻其声知其人 coloring