摩斯碼（Morse Code），“點”（dot）的長度是多少個時間單位？ (A) 1 (B) 2 (C) 3 (D) 4

問題詳情

31. 摩斯碼（Morse Code），“點”（dot）的長度是多少個時間單位？
(A) 1
(B) 2
(C) 3
(D) 4

參考答案

答案：A
難度：適中0.6
統計：A(3),B(0),C(1),D(0),E(0)

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