关于声的知识下列说法正确的是 A.声音既可以传递信息又可以传递能量b.噪声扰�主要是因为其音调太高c.�们听到的回声不是物体振动产生的 Template




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tomski关于声的知识下列说法正确的是 a.声音既可以传递信息又可以传递能量b.噪声扰�主要是因为其音调太高c.�们听到的回声不是物体振动产生的 coloring