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
On-scene communications will normally take place between（）.
The vessel has stayed in port for seven days because she needs（）.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Radio communication（）for many years and helps to save tens of thousands of lives.
Please use（）for（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
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（）.
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.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.