关于声现象下列说法正确的是 A.声音在不同介质中的传播速度相同b.人说话是靠舌头振动�声的c.只要物体在振动�们人耳就能听到声音d.一切 Template




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tomski关于声现象下列说法正确的是 a.声音在不同介质中的传播速度相同b.人说话是靠舌头振动�声的c.只要物体在振动�们人耳就能听到声音d.一切 coloring