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
The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.
Tropic tides are caused by the（）.
When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.
The speed of an ocean current is dependent on（）.
The steady current circling the globe at about 60°S is the（）.
Spring tides are tides that（）.
The set of the current is the（）.
Stand of the tide is that time when（）.
Which current would you encounter on a direct passage from southern Africa to Argentina，South America（）.