单项选择题

A.Spiral rainbandsB.Cloud wallsC.Funnel cloudsD.Cycloni……

The dense black cumulonimbus clouds surrounding the eye of a hurricane are called（）.

A.Spiral rainbands
B.Cloud walls
C.Funnel clouds
D.Cyclonic spirals

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热门试题

单项选择题The Beaufort scale is used to estimate the（）.

A.Wind direction
B.Percentage of cloud cover
C.Wind speed
D.Barometric pressure

单项选择题The area of strong westerly winds occurring between 40°S and 60°S latitude is called the（）.

A.polar easterlies
B.prevailing westerlies
C.roaring forties
D.jet streams

单项选择题The AMVER system requires（）.

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

单项选择题Of the following，（）is not a wind.

A.Bora
B.Gust
C.Gregale
D.Floe

单项选择题If the center of low pressure is due west of you in the Northern Hemisphere，which wind direction should you expect（）.

A.South to west
B.South to east
C.West to north
D.North to east