A.Change direction in a clockwise manner in the Northern Hemisphere
B.Circulate about a low pressure center in a counterclockwise manner in the Northern Hemisphere
C.Vary in strength constantly and unpredictably
D.Circulate about a high pressure center in a clockwise manner in the Southern Hemisphere
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A.It provides a legal reason to cancel a projected voyage
B.It allows the mariner to make long term weather forecasts
C.It is of little benefit since the weather changes frequently and rapidly
D.It gives the mariner time to prepare for weather changes
A.windy showers
B.showers with winds
C.wintry showers
D.showery winds
A.temperature
B.visibility
C.predicted weather for the next twelve hours
D.barometric pressure and change in the last three hours
A.Commercial radio broadcasts
B.The Coast Guard on scheduled marine information broadcasts
C.VHF-FM continuous marine weather broadcasts provided by the National Weather Service
D.All of the above
A.Given only to TV stations
B.Transmitted only by commercial broadcast stations
C.Broadcast in plain language
D.Broadcast immediately on VHF Channel 16 and 2182 kHz
最新試題
If the center of low pressure is due west of you in the Northern Hemisphere，which wind direction should you expect（）.
When force of winds reaches 10-11 in Beaufort scale，we usually call such wind（）.
Weather observations provided by each weather station include all of the following except（）.
The AMVER system requires（）.
The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the（）.
Weather information is available from（）.
Weather forecast messages are usually（）.
When observing a rapid rise in barometric pressure，you may expect（）.
After a cold front passes，the barometric pressure（）.
The winds you would expect to encounter in the North Atlantic between latitudes 5° and 30° are known as the（）.