Vessel in distress（）indicate their position by any method.

单项选择题The list of Coast Stations is republished（）in a trilingual.

A.every two years
B.every three years
C.every year
D.every four years

单项选择题Having studied the INMARSAT document, GMDSS document, SOLAS Convention and other international navigation documents, we all know that the Chapter IV of SOLAS Convention is mainly about（）.

A.the radio regulations
B.the technical terms and definitions
C.how to operate the GMDSS SES equipment
D.Maritime Communications

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

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

单项选择题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

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

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