单项选择题
The NCC is located in the（）.
A.IMO Headquarters in London B.Inmarsat Headquarters building in London C.Western European Maritime Organization D.International Maritime Safety Committee
单项选择题 The GMDSS defines four sea area based on the（）.
单项选择题 The position if the AOR-w satellite in the INMARSAT system is（）above the equator.
单项选择题 There is actually an overlapped area of（）ocean regions somewhere in Western European Waters.
