A.as a mass of warm，humid air rises into the atmosphere and cools，condensing moisture into small droplets
B.as winds blow across bodies of water，the sun causes the moisture to be absorbed and move upward forming clouds
C.dry air compresses moisture from the atmosphere into clouds
D.when the relative humidity of the atmosphere is low
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A.high pressure fluid accumulators
B.driving air-powered plunger pumps
C.filling open-circuit breathing systems
D.bladder-type accumulators
A.Sailing Directions
B.Light List
C.List of Private Aids
D.Aids to Navigation Manual
A.radio time signal
B.comparison with a timepiece of known error
C.applying the prevailing chronometer rate to previous readings
D.All of the above
A.National Geospatial-Intelligence Agency
B.Coast Guard
C.Naval Observatory
D.National Ocean Service
A.underlined letters
B.capital letters
C.italics
D.boldface print
最新試題
Deneb is found in what constellation?（）
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（）.
Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate（）.
Compared to a low pressure system，generally the air in a high is（）.
Changing rescuers while carrying out artificial respiration should be done（）.
Cyclones that have warm sectors usually move（）.
Complete information on weather broadcasts throughout the world is contained in（）.
Consideration should be given in planning for the mooring orientation in a new location so that in adverse weather a crane is available to off-load the supply vessel on what side of the unit?（）
Charts showing the coast of Mexico are produced by the United States（）.