A.Changes direction clockwise，as from north to east，etc
B.Changes direction violently and erratically
C.Remains constant in direction and speed
D.Changes direction counterclockwise，as from south to east，etc
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A.Westerlies
B.Easterlies
C.Northerlies
D.Southerlies
A.The center of the storm will by-pass you
B.The storm will strike you on the starboard side
C.You are in the direct path of the storm and should take immediate steps to batten down loose gear
D.The storm is starting to break up
A.On the starboard quarter，hold course and make as much way as possible
B.2 points on the port quarter，and make as much way as possible
C.On the port bow，and make as much way as possible
D.Dead ahead and heave to
A.West or northwest
B.Northeast
C.Southeast
D.North
A.forest fires
B.smoke from industrial areas
C.dust or sand storms
D.water droplets with the relative humidity more than 95%
最新試題
Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.
Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.
Wen a hurricane passes over colder water or land and loses its tropical characteristics，the storm becomes a（n）（）.
The doldrums are characterized by（）.
When experiencing heavy winds，you should reef sails to（）.
In the relatively calm area near the hurricane center，the seas are（）.
In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.
Tropical cyclones are classified by form and intensity.Which system does not have closed isobars（）.
Which type of precipitation is a product of the violent convection found in thunderstorms（）.
The wind is（）and decreasing.