問題詳情
聲波由空氣中傳入水中時,必定
(A)頻率變大
(B)波長變短
(C)波速變慢
(D)波速變快。
(A)頻率變大
(B)波長變短
(C)波速變慢
(D)波速變快。
參考答案
答案:D
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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