单项选择题
A.Wall cloud B.Nimbostratus cloud C.Bar D.Funnel
The dense black cumulonimbus clouds surrounding the eye...
单项选择题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
The Beaufort scale is used to estimate the（）.A.Wind dir...
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
The area of strong westerly winds occurring between 40°...
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
