A.SOS
B.Mayday
C.Securite
D.PAN
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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
A.Mayday
B.Pan-pan
C.Securite
D.Safety
最新試題
What does the term TO NAVIGATE WITH CAUTION mean?（）.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
The two main types of load cells used in mooring tension gauges are（）.
Which radiotelephone signal indicates receipt of a distress message?（）
The towing light is a(n)（）.
The radiotelegraph alarm signal is（）.
The use of the danger signal（）.
In radiotelephone communications，the prefix PAN-PAN indicates that（）.
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）
There is not（）depth of water around the area centered at the lighthouse.