单项选择题
A.Doldrums B.Westerlies C.Trades D.Easterlies
The eye of a hurricane is surrounded by dense black cum...
单项选择题The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the（）.
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
