A.identify
B.Correct
C.Reject
D.Print out
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A.B2
B.B1
C.MAR
D.NNN
A.frequency allocated
B.both language and frequency
C.language used
D.transmission power and time
A.10 minutes every 4 hours
B.half an hour every other hour
C.irregular period of time
D.5 minutes every two hours
A.in any INMARSAT regions
B.in each NAVTEX area
C.at any distance
D.in Areas A3 and A4
A.navigational / typhoon
B.traffic / meteorological
C.marine / hurricane
D.navigational / meteorological
最新試題
The advantage of geostationary satellites is（）.
COSPAS-SARSAT is intended to be used for（）.
All coast radio stations（）DSC installed for VHF and HF.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
On-scene communications will normally take place between（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
By using（）system a ship can send a distress message and know with certainty it will be received.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）