A.brightness of obtain
B.color of targets
C.shape of targets
D.bearing of objects
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A.aweigh
B.weight
C.weigh
D.weighing
A.wharf
B.wharves
C.wharve
D.wharfs
A.duty
B.on duty
C.at duty
D.in duty
A.overall
B.over
C.all
D.task
A.keep
B.keeping
C.keeps
D.is keeping
最新試題
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
When the wave period and the apparent rolling period are the same（）.
Which of the following is not a form of precipitation?（）
Before any loading takes place any signs of the previous cargo should do（）.
What is it called when it is possible to ignite the vapour above the oil?（）
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
The mean draft of a ship is the draft（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
When steering by autopilot,how often should the steering be checked?（）