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
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.
Radio beacon can be activated（）in case of distress.
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（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
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（）.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.