A.Iceland Current
B.Baltic Current
C.Labrador Current
D.Baffin Current
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A.Diurna
B.Semi-diurnal
C.Solar
D.Mixed
A.Add one hour to the times listed under the reference stations
B.Subtract one hour from the time differences listed for the subordinate stations
C.Apply no correction as the times in the reference stations are adjusted for daylight savings time
D.Add 15° to the standard meridian when calculating the time difference
A.freshets
B.floods
C.river flows
D.seismic events
A.speed of the current at a particular time
B.maximum speed of the current
C.direction from which the current flows
D.direction in which the current flows
A.SW'ly direction along the NW coast of Africa
B.S'ly direction off the East Coast of Australia
C.NW'ly direction along the SW coast of Africa
D.SW'ly direction along the SE coast of Greenland
最新試題
Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes（）.
To make sure of getting the full advantage of a favorable current，you should reach an entrance or strait at what time in relation to the predicted time of the favorable current?（）
Tide is（）in direction ENE.
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.
Stand of the tide is that time when（）.
Water may boil up around the stern of a vessel in a channel due to（）.
The type of current which will have the greatest effect on the course made good for your vessel is（）.
The velocity of the current in large coastal harbors is（）.
The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
Neap tides occur（）.