A.two
B.three
C.more than two
D.more than three
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A.Space Segment, NCC, RCC, SES, and CES
B.Space Segment, a satellite system, C system, NCC and NCS
C.Space Segment, NCC, NCS, CES and SES
D.A system, C system, satellite system, earth stations and NCS
A.4
B.9
C.8
D.5
A.the weather is always terrible
B.the condition there is complicated
C.the signals are too strong
D.their SES may recive the signals from unwanted satellite
A.international NAVTEX Service
B.FleetNET Service
C.SafetyNet Service
D.WWNWS
A.can suppress
B.can be suppressed
C.can not be suppressed
D.are to be suppressed
最新試題
All coast radio stations（）DSC installed for VHF and HF.
By using（）system a ship can send a distress message and know with certainty it will be received.
The vessel has stayed in port for seven days because she needs（）.
The priority of EGC messages is classified by（）.
COSPAS-SARSAT is intended to be used for（）.
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.
Ship-to-ship distress alerting should be conducted by（）.
Please use（）for（）.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.