A.countries
B.states
C.names
D.groups
您可能感興趣的試卷
你可能感興趣的試題
A.200
B.300
C.400
D.800
A.a dummy antenna
B.a supporting facilities
C.a back-up equipment
D.an antenna
A.HF
B.VHF
C.MF
D.MF/HF
A.518
B.2182
C.156.8
D.2187.5
A.1 February 1995
B.1 February 1992
C.1 July 1997
D.1 February 1999
最新試題
By using（）system a ship can send a distress message and know with certainty it will be received.
The priority of EGC messages is classified by（）.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
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.
The rescue coordination center may（）on stations which interfere with traffic.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.