問題詳情
4.無線電發射頻率為3 MHZ，其波長為：
(A)100公尺
(B)10公尺
(C)1公尺
(D)0.1公尺
(A)100公尺
(B)10公尺
(C)1公尺
(D)0.1公尺
參考答案
答案：A
難度：簡單0.765957
統計：A(36),B(7),C(3),D(1),E(0)
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