问题
单项选择题
The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
A.temperature
B.density
C.deflection
D.speed
答案
参考答案：D
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The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
A.temperature
B.density
C.deflection
D.speed
参考答案：D
