A.pilot charts
B.Notices to Mariners
C.Tide Tables
D.Current Tables
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A.are sheet or layer clouds
B.have undergone great vertical development
C.are middle or high altitude clouds
D.are rain clouds
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
最新試題
Concerning the identification signal for a pilot vessel，in fog，which statement is TRUE?（）
Considering the general circulation of the atmosphere，the wind system between latitudes 30°N and 60°N is commonly called the（）.
Corrosive liquids and acids should have which kind of label?（）
Compared to internal structural plating，the exterior hull plating on a ship is usually（）.
Define the acronym MSI（）.
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?（）
Class I and II private aids to navigation in or along navigable waters of the United States are listed in the（）.
Compared to a low pressure system，generally the air in a high is（）.
Dacron sails，when not in use，may be damaged if（）.
Deck beams on a ship are generally spaced at equal intervals and run（）.