99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

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

你可能感興趣的試題

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

單項(xiàng)選擇題

If you wished to transmit a message by voice concerning the safety of navigation，you would preface it by the word（）.

A.Mayday
B.Pan-pan
C.Securite
D.Safety