問題詳情
2.船舶通訊內容,可依訊息緊急程度,分成幾個不同等級?
(A)三個
(B)四個
(C)五個
(D)六個
(A)三個
(B)四個
(C)五個
(D)六個
參考答案
答案:B
難度:計算中-1
書單:沒有書單,新增
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