A.one flowing in the same direction as your course steered
B.one flowing in the opposite direction as your course steered
C.one that flows at nearly right angles to your course steered
D.a rotary current in which the direction of current flow constantly changes
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A.temperature and salinity differences in the water
B.wind and density differences in the water
C.water depth and underwater topography
D.rotation of the Earth and continental interference
A.black
B.setting
C.being
D.having
A.falls／in
B.has been falling／on
C.has fallen／at
D.is falling／in
A.is flowing towards the land
B.is moving towards the ocean
C.level is not changing
D.level is rising because of heavy rains
A.Prevailing Westerly
B.Sub-Polar Flow
C.West Wind Drift
D.Humboldt Current
最新試題
Tropic tides are caused by the（）.
Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.
Tide is（）in direction ENE.
（）is not a type of tide.
When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to（）.
The velocity of a rotary tidal current will be decreased when the Moon is（）.
You are docking a vessel．Wind and current are most favorable when they are（）.
Which statement is TRUE concerning apogean tides（）．
The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
The term flood current refers to that time when the water（）.