A.all vessels must carry an after range light
B.vessels less than 50 meters in length need not carry an after range light
C.vessels stopped dead in the water should turn off their range lights
D.vessels over 20 meters in length must carry both range lights from sunset to sunrise
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A.non-self-propelled raft
B.seaplanes
C.hovercrafts
D.All of the above
A.shall
B.should
C.would
D.had to
A.notify the competent authorities
B.sound the alarm
C.have passengers put on life preservers
D.cut off air supply to the fire
A.The one with the wind closest abeam
B.The one to windward
C.The one to leeward
D.The one that sounds the first whistle signal
A.East to northeast
B.East to southeast
C.North to northwest
D.South to southeast
最新試題
What is it called when it is possible to ignite the vapour above the oil?（）
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
When the wave period and the apparent rolling period are the same（）.
Which of the following is not an operation mode of AIS?（）
Before any loading takes place any signs of the previous cargo should do（）.
Manoeuvring information can not be obtained from（）.
（）is where the crew eat their meals.
The mean draft of a ship is the draft（）.
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）