A.precipitation
B.clear，cool weather
C.humid，sticky weather
D.cool fogs
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A.visibility
B.winds
C.sea
D.fog
A.visibility
B.winds
C.sea
D.fog
A.stormy weather is imminent
B.that present weather conditions will continue
C.a defect in the barometer
D.increasing wind strength
A.moderate but easily navigated
B.calm
C.mountainous and confused
D.mountainous but fairly regular as far as direction is concerned
A.high relative humidity
B.frequent showers and thunderstorms
C.steep pressure gradients
D.frequent calms
最新試題
Steady precipitation is typical of（）．
The passing of a low pressure system can be determined by periodically checking the（）.
Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
If you observe the point of cloud convergence shifting to the right and the “bar”of the storm appears to move along the horizon（）.
In the Northern Hemisphere a wind is said to veer when the wind（）.
Which type of precipitation is a product of the violent convection found in thunderstorms（）.
Two well-developed high pressure areas may be separated by a（）.
The doldrums are characterized by（）.
Wen a hurricane passes over colder water or land and loses its tropical characteristics，the storm becomes a（n）（）.