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
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Deck beams on a ship are generally spaced at equal intervals and run（）.
Compliance with the terms of the load line certificate on a ship is the responsibility of the（）.
Chart legends which indicate a conspicuous landmark are printed in（）.
Changing rescuers while carrying out artificial respiration should be done（）.
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（）.
Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate（）.
Daylight savings time is a form of zone time that adopts the time（）.
Define the acronym MSI（）.
Coast Pilots and navigational charts are kept corrected and up-to-date by using the（）.