单选题 1分

COSPAS-SARSAT is primarily used for______

  • A.improving communications in polar regions
  • B.providing MSI to mobile stations
  • C.saving the system users in distress anywhere in the world
  • D.transmitting and receiving information

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1 单选题 1分
  • A.short-range and long-rang radio system
  • B.INMARSAT and COSPAS-SARSAT
  • C.long-range and tcrrestrial radio system
  • D.the terrcstrial and satcllite communication systems
2 单选题 1分
  • A.location and capacity of the facilities located on board ships
  • B.position and type of a ship station
  • C.capacity and location of shore based communication facilities
  • D.position and capacity of mobile communication stations
3 单选题 1分
  • A.besides over polar regions
  • B.including the North Pole and the South Pole
  • C.above 70°N and below 70°S
  • D.as far North and South as 70°
4 单选题 1分