A.are sheet or layer clouds
B.have undergone great vertical development
C.are middle or high altitude clouds
D.are rain clouds
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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
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
最新試題
Deck beams on a ship are generally spaced at equal intervals and run（）.
Compared to a low pressure system，generally the air in a high is（）.
Cumulonimbus clouds are formed by（）.
Deneb is found in what constellation?（）
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?（）
Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.
Coast Pilots and navigational charts are kept corrected and up-to-date by using the（）.
Deficient oxygen content inside a chain locker can be detected with（）.
Concerning the identification signal for a pilot vessel，in fog，which statement is TRUE?（）
Clean air standards referred to as “Grade D” apply to compressed air for use in（）.