A.TTT
B.The spoken word PAN
C.The spoken word SECURITE
D.XXX
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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
A.MAYDAY
B.PAN
C.SECURITE
D.ATTENTION
最新試題
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.
We have no steel wire．You had better（）us one.
The two main types of load cells used in mooring tension gauges are（）.
Which radiotelephone signal indicates receipt of a distress message?（）
In radiotelephone communications，the prefix PAN-PAN indicates that（）.
The expression FIRST MAGNITUDE is usually used to refer only to bodies of magnitude（）.
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）
To develop maximum anchor holding power，the optimum angle between the anchor’s shank and the mooring lines is（）.
What form of ice is of land origin?（）
What is the（）of the turning circle in mavoeuvring?