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
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Chart legends printed in capital letters show that the associated landmark is（）.
Chart legends which indicate a conspicuous landmark are printed in（）.
Deck beams on a ship are generally spaced at equal intervals and run（）.
Dacron sails，when not in use，may be damaged if（）.
Clouds with the prefix “nimbo” in their name（）.
Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.
Cyclones that have warm sectors usually move（）.
Define the acronym MSI（）.
Charts showing the coast of Mexico are produced by the United States（）.
Changing rescuers while carrying out artificial respiration should be done（）.