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
Deneb is found in what constellation?（）
Compared to a low pressure system，generally the air in a high is（）.
Diesel powered industrial trucks on a ship that are provided with safeguards to the exhaust，fuel，and electrical systems are designated（）.
Deficient oxygen content inside a chain locker can be detected with（）.
Chronometer error may be found by（）.
Chart legends printed in capital letters show that the associated landmark is（）.
Corrosive liquids and acids should have which kind of label?（）
Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate（）.
Compliance with the terms of the load line certificate on a ship is the responsibility of the（）.
Control of fire should be addressed（）.