A.ship-to-shore
B.shore-to-ship
C.bridge-to-bridge
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A.some
B.lots of
C.many
D.all
A.impossible
B.possible
C.easy
D.difficult
A.55.5 W
B.180E
C.15.5W
D.64.5E
A.one means, whether satellite or terrestrial techniques
B.two means, whether satellite or terrestrial techniques
C.two separate and independent means, each using different radio communication services
D.two means, such as MF DSC and HF DSC
A.satellite /terrestrial system
B.INMAARSAT/COSPAS-SARSAT
C.SART / EPIRB
D.geostationary/polar-orbiting satellites
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Please use（）for（）.
The priority of EGC messages is classified by（）.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
COSPAS-SARSAT is intended to be used for（）.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
Radio beacon can be activated（）in case of distress.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.