The GMDSS defines four sea area based on the（）.<br>A:location and capacity of the facilities located on board ships<br>B:Position and type of a sincre sintion<br>C:Capacity and location of shore based communication facilities<br>D:Position and capacity of mobile communication stations

The GMDSS defines four sea area based on the（）.
A:location and capacity of the facilities located on board ships
B:Position and type of a sincre sintion
C:Capacity and location of shore based communication facilities
D:Position and capacity of mobile communication stations

出自：海船船员证

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