A.1982
B.1980
C.1984
D.1988
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A.alerting
B.on-scene communication
C.safety information
D.general communication
A.sometimes
B.all times
C.never
D.partly
A.to avoid mutual interference
B.to keep silence
C.owing to the time-share nature
D.to regulate transmitter power
A.from any INMARSAT satellite
B.via any appropriate Navtex and EGC station
C.via the satellite the MES is tracking
D.from any RCC and coast station
A.four
B.six
C.five
D.three
最新試題
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.
The advantage of geostationary satellites is（）.
Radio beacon can be activated（）in case of distress.
COSPAS-SARSAT is intended to be used for（）.
SOLAS ships shall be equipped with（）.
Please use（）for（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
The frequency（）the safety message will be transmitted shall be included in DSC safety call.