A.Wind direction
B.Percentage of cloud cover
C.Wind speed
D.Barometric pressure
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A.polar easterlies
B.prevailing westerlies
C.roaring forties
D.jet streams
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
A.Bora
B.Gust
C.Gregale
D.Floe
A.South to west
B.South to east
C.West to north
D.North to east
A.Drops，and the temperature drops
B.Drops，and the temperature rises
C.Rises，and the temperature drops
D.Rises，and the temperature rises
最新試題
The Beaufort scale is used to estimate the（）.
While on watch，you notice that the air temperature is dropping and is approaching the dew point.Which type of weather should be forecasted（）.
In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as（）.
Of the following，（）is not a wind.
The dense black cumulonimbus clouds surrounding the eye of a hurricane are called（）.
Widely spaced isobars on a weather map indicate（）.
When observing a rapid rise in barometric pressure，you may expect（）.
The area of strong westerly winds occurring between 40°S and 60°S latitude is called the（）.
HIGH WAVES；DENSE STREAKS OF FOAM ALONG THE DIRECTION OF THE WIND；CRESTS OF WAVES BEGIN TO TOPPLE，TUMBLE AND ROLL OVER；SPRAY MAY AFFECT VISIBILITY.This condition is likely to be termed（）.
What benefit is a weather bulletin to a mariner（）.