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(30), B(42), C(24), D(499), E(0) #2817058

私人筆記 (共 1 筆)

鄭力恒

2024/02/24

私人筆記#5781034

未解鎖

MAYDAY (Distress pri...

(共 83 字，隱藏中）

前往觀看

7

0