A.it is above 70°F
B.the ground over which it moves is cooler than the air
C.it originated in a high pressure area
D.it originated in a low pressure area
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A.steady rainfall
B.hail storms
C.thunderstorms
D.tornadoes or waterspouts
A.drops，and the temperature drops
B.drops，and the temperature rises
C.rises，and the temperature drops
D.rises，and the temperature rises
A.fluctuates
B.remains the same
C.remains the same，with clouds forming rapidly
D.rises，often quite rapidly，with clearing skies
A.Backing (of wind)
B.Beach (to)
C.Veering (of wind)
D.Maintaining direction of the wind
A.summarizes a great deal of information
B.can be interpreted accurately
C.appears daily
D.is prepared by the Weather Bureau
最新試題
In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as（）.
When a high pressure system is centered north of your vessel in the Northern Hemisphere（）.
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（）.
The dense black cumulonimbus clouds surrounding the eye of a hurricane are called（）.
What will a veering wind do（）.
What benefit is a weather bulletin to a mariner（）.
Weather conditions in the middle latitudes generally move（）．
After a cold front passes，the barometric pressure（）.
If the sky was clear，with the exception of a few cumulus clouds，it would indicate（）.
Weather information is available from（）.