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單項(xiàng)選擇題

Which one of the following is the safety signal?（）.

A.SSS
B.TTT
C.XXX
D.FFF

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單項(xiàng)選擇題

Your vessel has been damaged and is taking on water，but you do not require immediate assistance. You would preface a message advising other vessels of your situation with（）.

A.Mayday-Mayday-Mayday
B.Pan-Pan (3 times)
C.Securite-Securite-Securite
D.SOS-SOS-SOS

單項(xiàng)選擇題

The urgency signal concerning the illness of persons on board ship is（）.

A.MAYDAY
B.PAN
C.SECURITE
D.ATTENTION

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