A.westerly
B.parallel to the isobars in the warm sector
C.toward the nearest high pressure area
D.faster than the accompanying cold front
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A.clearing weather
B.that a warm front has passed
C.probable thunderstorm activity
D.an approaching hurricane or typhoon
A.vertical air movements
B.heavy rainstorms
C.horizontal air movements
D.any movement of moist air
A.Skull and crossbones
B.Yellow and white
C.Red and white
D.White and black
A.soft clay
B.hard mud
C.very soft mud
D.sand
A.immediately after restoring vital services
B.immediately
C.following control of flooding
D.following establishment of fire boundaries
最新試題
Compared to internal structural plating，the exterior hull plating on a ship is usually（）.
Concerning a celestial observation，the azimuth angle is measured from the principal vertical circle to the（）.
Chart legends which indicate a conspicuous landmark are printed in（）.
Charts showing the coast of Mexico are produced by the United States（）.
Dacron sails，when not in use，may be damaged if（）.
Class I and II private aids to navigation in or along navigable waters of the United States are listed in the（）.
Considering the general circulation of the atmosphere，the wind system between latitudes 30°N and 60°N is commonly called the（）.
Clouds form（）.
Deneb is found in what constellation?（）
Cyclones that have warm sectors usually move（）.