A.coast to aircraft operational communications
B.aircraft to ship operational communications
C.lock & bridge communications
D.aircraft to ship navigational communications
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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
A.It causes minimal damage
B.It is safer for personnel
C.It is cheaper
D.It is most effective on a per unit basis
A.Grade A flammable liquid
B.Grade C flammable liquid
C.Grade D combustible liquid
D.Grade E combustible liquid
A.six months
B.one year
C.two years
D.thirty months
A.loss of pay during the period of such use
B.reprimand by the US Coast Guard
C.revocation of license or certificate
D.termination of employment
最新試題
Concerning a celestial observation，the azimuth angle is measured from the principal vertical circle to the（）.
Clean air standards referred to as “Grade D” apply to compressed air for use in（）.
Considering the general circulation of the atmosphere，the wind system between latitudes 30°N and 60°N is commonly called the（）.
Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.
Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate（）.
Dacron sails，when not in use，may be damaged if（）.
Denebola is found in what constellation?（）
Control of fire should be addressed（）.
Cyclones that have warm sectors usually move（）.
Deficient oxygen content inside a chain locker can be detected with（）.