22. What is the situation on board a ship when three calls of pan-pan in radiotelephone communications are used?
(A) a distress
(B) a securite
(C) an SOS
(D) an urgency

答案：登入後查看
統計： A(32), B(43), C(26), D(514), E(0) #2817058

私人筆記 (共 1 筆)

鄭力恒

2024/02/24

私人筆記#5781034

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MAYDAY (Distress pri...

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