关于声现象下列说法中正确的是 A.一切�声的物体都在振动b.噪声不是由物体的振动产生的c.声音可以在真空中传播d.�们能够辨别不同乐器 Template




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tomski关于声现象下列说法中正确的是 a.一切�声的物体都在振动b.噪声不是由物体的振动产生的c.声音可以在真空中传播d.�们能够辨别不同乐器 coloring