单项选择题
A.the density of the water B.the air temperature C.the presence of a high pressure area near it D.underwater soil conditions
The set of the ocean current is caused by（）.A.density d...
单项选择题The set of the ocean current is caused by（）.
A.density differences of the water B.rotation of the earth C.direction of primary circulation of air D.all of the above
The set of the equatorial countercurrent is generally t...
单项选择题The set of the equatorial countercurrent is generally to the（）.
A.north B.east C.southwest D.northwest
The set of the current is the（）.A.speed of the current ...
单项选择题The set of the current is the（）.
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
