問題詳情
14.摩斯碼的字（Word）或字組（Group）間的時間單位為多少單位？
(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：適中0.5
書單：沒有書單，新增
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