問題詳情
34.使用燈號與聲音傳送「摩爾斯信號」時，原則上字組與字組（例如：Boy與Girl）間的間隔長度為幾個時間單位？
(A)5
(B)6
(C)7
(D)8
(A)5
(B)6
(C)7
(D)8
參考答案
答案：C
難度：簡單0.78125
統計：A(1),B(3),C(25),D(1),E(0)
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