A.64.5E
B.178E
C.15.5W
D.54W
您可能感興趣的試卷
你可能感興趣的試題
A.communications in the whole system will stop
B.the global system will be damaged
C.the back-up one will take its place
D.the whole system will not work
A.besides the polar regions
B.including the North Pole and the South Pole
C.above 70N and below 70S
D.as far north and south 70
A.satellite network
B.Satellite Link
C.INMARSAT
D.Satellite System
A.To run faster than ever
B.To go forward
C.To march without stopping
D.A significant symbol of a great improvement in maritime communication
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
最新試題
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
（）will form the basis for distress alerting and safety calling.
We consider（）send a helicopter with medical facilities to the distress area.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.