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單項(xiàng)選擇題

There are（）NCSs in total, one in each ocean region, the AOR (E and W), IOR and POR.

A.3
B.2
C.1
D.4

單項(xiàng)選擇題

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