A.falls／in
B.has been falling／on
C.has fallen／at
D.is falling／in
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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
A.the density of the water
B.the air temperature
C.the presence of a high pressure area near it
D.underwater soil conditions
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
最新試題
Which statement is TRUE concerning apogean tides（）．
When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.
（）is not a type of tide.
The type of current which will have the greatest effect on the course made good for your vessel is（）.
Priming of the tides occurs（）.
Neap tides occur when the（）.
Water may boil up around the stern of a vessel in a channel due to（）.
The speed of an ocean current is dependent on（）.
Which current would you encounter on a direct passage from southern Africa to Argentina，South America（）.
Stand of the tide is that time when（）.