A.rain
B.frost
C.sleet
D.snow
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A.sea
B.current
C.tide
D.swell
A.above
B.below
C.equal to
D.uncertain
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
最新試題
The circulation around a low pressure center in the Northern Hemisphere is（）.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
Fog is likely to occur when there is little difference between the dew point and the（）.
The dew point temperature is（）.
ECDIS must be able to perform all of the following EXCEPT（）.
Bales close to the deckhead should be covered to prevent（）.
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?（）