问题
单项选择题
The radiotelegraphy safety messages for condition indicating distress,urgency and safety,respectively,are().
A.SOS,ZZZ,XXX
B.SOS,UUU,SSS
C.SOS,XXX,TTT
D.SOS,TTT,UUU
答案
参考答案:C
The radiotelegraphy safety messages for condition indicating distress,urgency and safety,respectively,are().
A.SOS,ZZZ,XXX
B.SOS,UUU,SSS
C.SOS,XXX,TTT
D.SOS,TTT,UUU
参考答案:C