A.the weather is always terrible
B.the condition there is complicated
C.the signals are too strong
D.their SES may receive the signals from unwanted satellite
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A.from any Inmarsat satellite
B.from any appropriate Navtex and EGC station
C.via the satellite the SES is tracking
D.from any RCC and coast station
A.identify
B.Correct
C.Reject
D.Print out
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
最新試題
The rescue coordination center may()on stations which interfere with traffic.
We consider()send a helicopter with medical facilities to the distress area.
The advantage of geostationary satellites is().
What following is not among the function of SOLAS ships?()
Radio communication()for many years and helps to save tens of thousands of lives.
()will form the basis for distress alerting and safety calling.
The frequency()the safety message will be transmitted shall be included in DSC safety call.
All coast radio stations()DSC installed for VHF and HF.
The quality of EGC messages is()affected by the position of the ship, the time of reception and climatic conditions.
If the beacon is mounted at a wrong place, it may()by sea water, chemicals, exhaust and vibrations.