A.vertical air movements
B.heavy rainstorms
C.horizontal air movements
D.any movement of moist air
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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
A.prevailing westerlies
B.horse latitudes
C.trade winds
D.subpolar low pressure belts
A.Weather side
B.Leeward side
C.Upwind side
D.Crosswind side
最新試題
Day-shapes must be displayed（）.
Clean air standards referred to as “Grade D” apply to compressed air for use in（）.
Concerning a celestial observation，the azimuth angle is measured from the principal vertical circle to the（）.
Control of fire should be addressed（）.
Clouds form（）.
Charts showing the coast of Mexico are produced by the United States（）.
Denebola is found in what constellation?（）
Clouds with the prefix “nimbo” in their name（）.
Changing rescuers while carrying out artificial respiration should be done（）.
Cyclones that have warm sectors usually move（）.