A.Ice blink
B.Whiteout
C.Water sky
D.Aurora reflection
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A.a specific barometric pressure
B.a specific temperature
C.a specific wind speed
D.any time
A.increasing
B.decreasing
C.remaining the same
D.varying during the day
A.north
B.south
C.east
D.west
A.forecasts
B.observations
C.analyses
D.reports
A.geostrophic winds
B.doldrums
C.horse latitudes
D.prevailing westerlies
最新試題
Two well-developed high pressure areas may be separated by a（）.
The wind is（）and decreasing.
Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.
Steady precipitation is typical of（）．
What kind of pressure systems travel in easterly waves（）.
What is the first visible indication of the presence of a tropical cyclone or hurricane（）.
In the Northern Hemisphere a wind is said to veer when the wind（）.
The doldrums are characterized by（）.
In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.
The direction of prevailing winds in the Northern hemisphere is caused by the（）.