A.International Code Signal AA
B.orange-colored smoke
C.red flares
D.the repeated raising and lowering of outstretched arms
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A.the continuous sounding of any fog signal apparatus
B.giving five or more short and rapid blasts of the whistle
C.firing a gun at intervals of about a minute
D.a barrel with burning oil in it，on deck
A.The unit is working properly
B.The face mask is not sealed properly
C.The air bottle needs to be refilled
D.The air supply hose has a leak
A.opening the automatic drain plugs
B.draining the water pockets
C.using the electric bilge pump
D.using the bailers and cellulose sponge
A.distress position
B.spoken words Mayday，Mayday，Mayday
C.ship's name
D.ship's call letters
A.consists of 5 or more short blasts of the fog signal apparatus
B.may be used separately or with other distress signals
C.consists of the raising and lowering of a large white flag
D.is used to indicate doubt about another vessel's intentions
最新試題
The service life of distress signals must be not more than（）.
A person who sees someone fall overboard should（）.
The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.
You are proceeding to a distress site. The survivors are in liferafts. What will make your ship more visible to the survivors?（）.
On every vessel，distress signals must be stowed（）.
An orange flag showing a black circle and square is a（）.
If an airplane circles a vessel 3 times，crosses the vessel’s course close ahead while rocking the wings，and heads off in a certain direction，what does this indicate?（）
By regulation，orange smoke distress signals will expire not more than how many months from the date of manufacture?（）
At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.