A.has no more than two compartments
B.has two compartments in addition to the engine room
C.will sink if any two compartments are flooded
D.will float if any two adjacent compartments are flooded
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A.clearing weather
B.that a warm front has passed
C.probable thunderstorm activity
D.an approaching hurricane or typhoon
A.are sheet or layer clouds
B.have undergone great vertical development
C.are middle or high altitude clouds
D.are rain clouds
A.underlined letters
B.capital letters
C.italics
D.boldface print
A.warmer，less dense，and less stable
B.cool，more dense，and drier
C.muggy and cloudy
D.extremely moist with high relative humidity
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.left in the sunlight
B.stowed wet
C.washed with soap
D.folded frequently
A.one zone to the east
B.one zone to the west
C.two zones to the east
D.two zones to the west
A.prevailing westerlies
B.horse latitudes
C.trade winds
D.subpolar low pressure belts
A.soft clay
B.hard mud
C.very soft mud
D.sand
A.When at anchor，the pilot vessel is only required to sound anchor signals
B.The identification signal must be sounded any time the pilot vessel is underway
C.The pilot vessel may only sound the identity signal when making way
D.All of the above
最新試題
Class I and II private aids to navigation in or along navigable waters of the United States are listed in the（）.
Coiling new rope against the lay，bringing the lower end up through the center of the coil，then coiling with the lay，in order to remove the kinks，is known as（）.
Charts showing the coast of Mexico are produced by the United States（）.
Clouds with the prefix “nimbo” in their name（）.
Complete information on weather broadcasts throughout the world is contained in（）.
Deck beams on a ship are generally spaced at equal intervals and run（）.
Concerning the identification signal for a pilot vessel，in fog，which statement is TRUE?（）
Deficient oxygen content inside a chain locker can be detected with（）.
Corrosive liquids and acids should have which kind of label?（）
Clean air standards referred to as “Grade D” apply to compressed air for use in（）.