A.polar easterlies
B.prevailing westerlies
C.roaring forties
D.jet streams
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A.Sailing plans to be sent before departure
B.More frequent reports in heavy weather
C.Arrival reports to be sent within 8 hours of arrival
D.A position report within 24 hours of departure
A.Bora
B.Gust
C.Gregale
D.Floe
A.South to west
B.South to east
C.West to north
D.North to east
A.Drops，and the temperature drops
B.Drops，and the temperature rises
C.Rises，and the temperature drops
D.Rises，and the temperature rises
A.she requested shelter permission
B.she intended to berth at port of KAGOSHIMA
C.she intended to change her course
D.she was reporting to the port that a tropical storm is coming
最新試題
Of the following，（）is not a wind.
When a high pressure system is centered north of your vessel in the Northern Hemisphere（）.
The Beaufort scale is used to estimate the（）.
When force of winds reaches 10-11 in Beaufort scale，we usually call such wind（）.
Weather information is available from（）.
When observing a rapid rise in barometric pressure，you may expect（）.
If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you，what winds can you expect in the Southern Hemisphere?（）.
Weather forecast messages are usually（）.
If the center of low pressure is due west of you in the Northern Hemisphere，which wind direction should you expect（）.
The area of strong westerly winds occurring between 40°S and 60°S latitude is called the（）.