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
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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
A.inconspicuous
B.conspicuous
C.a government facility or station
D.a radio transmitter
A.coast to aircraft operational communications
B.aircraft to ship operational communications
C.lock & bridge communications
D.aircraft to ship navigational communications
A.without losing the rhythm of respiration
B.only with the help of two other people
C.by not stopping the respiration for more than 5 minutes
D.at ten minute intervals
最新試題
Corrosive liquids and acids should have which kind of label?（）
Chart legends printed in capital letters show that the associated landmark is（）.
Diesel powered industrial trucks on a ship that are provided with safeguards to the exhaust，fuel，and electrical systems are designated（）.
Chronometer error may be found by（）.
Complete information on weather broadcasts throughout the world is contained in（）.
Compared to internal structural plating，the exterior hull plating on a ship is usually（）.
Coast Pilots and navigational charts are kept corrected and up-to-date by using the（）.
Deck beams on a ship are generally spaced at equal intervals and run（）.
Daylight savings time is a form of zone time that adopts the time（）.
Deficient oxygen content inside a chain locker can be detected with（）.