A.above
B.below
C.equal to
D.uncertain
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A.varies
B.maintains
C.Shifts
D.assembles
A.UK Hydrographic Office
B.IMO
C.International Hydrographic Organization
D.International Association of Classification society
A.Being mroe than 25 miles from shore
B.Only at night when it‟s dark
C.Being more than 6 miles from shore
D.Never
A.Advection
B.Radiation fog
C.frontal fog
D.Steam fog
A.speed
B.height
C.direction
D.course
最新試題
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
The circulation around a low pressure center in the Northern Hemisphere is（）.
The helm command PORT TWENTY means（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
What is it called when it is possible to ignite the vapour above the oil?（）
Bales close to the deckhead should be covered to prevent（）.
A tide is called diurnal when（）.
According to the relevant regulation, lifeboat should be powered by（）.