单选题Ocean currents are well defined and（）.Acreate large waves in the direction of the currentBchange direction 360°during a 24 hour periodCremain fairly constant in direction and velocity throughout the yearDare characterized by a light green color
单选题
Ocean currents are well defined and（）.
A
create large waves in the direction of the current
B
change direction 360°during a 24 hour period
C
remain fairly constant in direction and velocity throughout the year
D
are characterized by a light green color
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