A.3
B.4
C.8
D.12
您可能感興趣的試卷
你可能感興趣的試題
A.besides the polar regions
B.including the North Pole and the South Pole
C.above 70°N and below 70°S
D.as for north and south as 70°
A.be transmitted at once though the frequency is not clear
B.be transmitted as soon as the frequency is cleared coordinately
C.be transmitted at its scheduled transmissions
D.be transmitted at next scheduled transmissions
A.meteorological warnings
B.navigational warnings
C.search and rescue information
D.meteorological forecast
A.300
B.400
C.500
D.600
A.on the bridge
B.in the coast station
C.on the forecastle
D.on starboard side
最新試題
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 advantage of geostationary satellites is（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
By using（）system a ship can send a distress message and know with certainty it will be received.
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.
SOLAS ships shall be equipped with（）.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
All coast radio stations（）DSC installed for VHF and HF.
Ship-to-ship distress alerting should be conducted by（）.