单项选择题
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
The AMVER system requires（）.A.Sailing plans to be sent ...
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
