单项选择题
A.permanent waves
B.tidal waves
C.tropical waves
D.tropical storms
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().
单项选择题 In the Northern Hemisphere you are caught in the dangerous semicircle with plenty of sea room available. The best course of action is to bring the wind on the().