单项选择题

Low pressure disturbances，which travel along the intertropical convergence zone，are called（）.

A.permanent waves
B.tidal waves
C.tropical waves
D.tropical storms

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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（）.

A.starboard bow，note the course，and head in that direction
B.starboard quarter，note the course，and head in that direction
C.port quarter，note the course，and head in that direction
D.port bow，note the course，and head in that direction

单项选择题

In the Northern Hemisphere，a wind that shifts counterclockwise is a（）.

A.veering wind
B.backing wind
C.reverse wind
D.chinook wind

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（）.

A.starboard bow and make as much headway as possible
B.starboard quarter，and make as much headway as possible
C.port quarter，and make as much headway as possible
D.port bow，and make as much headway as possible