关于声音下列说法中正确的是 A声音在真空中传播最快b能区分不同人说话的声音是因为他们�出声音的响度不同c“禁鸣喇叭 是在声源处 Template




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tomski关于声音下列说法中正确的是 a声音在真空中传播最快b能区分不同人说话的声音是因为他们�出声音的响度不同c“禁鸣喇叭 是在声源处 coloring