单项选择题

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

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The position if the AOR-w satellite in the INMARSAT system is（）above the equator.

A.64.5E
B.178E
C.15.5W
D.54W

单项选择题

There is actually an overlapped area of（）ocean regions somewhere in Western European Waters.

A.two
B.three
C.more than two
D.more than three

单项选择题

There is actually an overlap of（）ocean regions somewhere in Western European Waters.

A.as many as three
B.more than two
C.less than two
D.up to four