A.MAYDAY
B.PAN-PAN
C.SECURITE
D.SOS
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A.TTT
B.The spoken word PAN
C.The spoken word SECURITE
D.XXX
A.SOS
B.XXX
C.TTT
D.PAN
A.SOS
B.Mayday
C.Securite
D.PAN
A.SSS
B.TTT
C.XXX
D.FFF
A.Mayday-Mayday-Mayday
B.Pan-Pan (3 times)
C.Securite-Securite-Securite
D.SOS-SOS-SOS
最新試題
What is the MOST irritating to the skin?（）
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.
The vessel was drifted off from her（）due to strong wind.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
The use of the danger signal（）.
What happens to the efficiency of an anchor when it is moved from sand to mud?（）
Fog forms when the air（）.
Which is NOT a distress signal?（）
The two main types of load cells used in mooring tension gauges are（）.
The transmission of messages respecting the dangers specified is free（）cost to the ships concerned.