A.receive shore-to-ship distress alerting
B.transmit ship-to-shore distress alerting
C.receive message for public correspondence
D.transmit and receive locating signals
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A.the radio regulations
B.the technical terms and definitions
C.how to operate the GMDSS SES equipment
D.Maritime Communications
A.only SAR authorities on land
B.all ships in a very large sea area
C.the nearest coast stations and port radios
D.the SAR authorities ashore as well as ships in the vicinity of the casualty
A.countries
B.states
C.names
D.groups
A.one
B.two
C.three
D.four
A.a dummy antenna
B.a supporting facilities
C.a back-up equipment
D.an antenna
最新試題
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
On-scene communications will normally take place between（）.
（）will form the basis for distress alerting and safety calling.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
What following is not among the function of SOLAS ships?（）
By using（）system a ship can send a distress message and know with certainty it will be received.
The advantage of geostationary satellites is（）.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.