单项选择题
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
单项选择题 Low pressure disturbances，which travel along the intertropical convergence zone，are called（）.
单项选择题 In the Northern Hemisphere，your vessel is believed to be in the direct path of a hurricane，and plenty of sea room is available. The best course of action is to bring the wind on the（）.
单项选择题 In the Northern Hemisphere，a wind that shifts counterclockwise is a（）.