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
The tide is（）.
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?（）
The Benguela Current flows in a（）.
Stand of the tide is that time when（）.
Neap tides occur only（）.
You are anchoring in a river where the current is from one direction only.The best way to lay out two anchors is to have them（）.
The set of the current is the（）.
The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.
When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to（）.