A.the density of the water
B.the air temperature
C.the presence of a high pressure area near it
D.underwater soil conditions
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A.density differences of the water
B.rotation of the earth
C.direction of primary circulation of air
D.all of the above
A.north
B.east
C.southwest
D.northwest
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.east
B.northeast
C.southwest
D.west
A.velocity of current in knots
B.direction from which the current flows
C.estimated current
D.direction toward which the current flows
最新試題
When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.
The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
The velocity of the current in large coastal harbors is（）.
When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to（）.
Which statement is TRUE concerning equatorial tides（）.
The speed of an ocean current is dependent on（）.
Stand of the tide is that time when（）.
Tide is（）in direction ENE.
You are docking a vessel．Wind and current are most favorable when they are（）.
The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.