问题
单项选择题
A message giving warning of a hurricane should have which prefix when sent by radiotelephone?()
A.Pan-Pan (3 times)
B.Securite Securite Securite
C.TTT TTT TTT
D.No special prefix
答案
参考答案:B
A message giving warning of a hurricane should have which prefix when sent by radiotelephone?()
A.Pan-Pan (3 times)
B.Securite Securite Securite
C.TTT TTT TTT
D.No special prefix
参考答案:B