下列有关声音的说法中正确的说法是a戴耳罩是在声源处减弱噪声b�声体振动�率越高响度越大c�声体的振幅越大�率越高d声音在空气中的 Template




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tomski下列有关声音的说法中正确的说法是a戴耳罩是在声源处减弱噪声b�声体振动�率越高响度越大c�声体的振幅越大�率越高d声音在空气中的 coloring