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單項選擇題

Stations are grouped by countries arranged in the（）order of their country symbols.

A.alphabetical
B.figure
C.name of stations
D.series

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單項選擇題

When engaged on international voyages, ships of 1600 tons gross tonnage and upwards shall be fitted with a（）.

A.radio direction-finding apparatus
B.DSC
C.NAVTEX
D.EPIRB

單項選擇題

The maritime access code of telephone mode in INMARSAT-A terminal for the AOR(W) is（）.

A.871
B.872
C.873
D.874

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