97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

單項選擇題

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

你可能感興趣的試題

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

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

<ins id="8dfni"></ins>

<dl id="8dfni"></dl>

<ins id="8dfni"></ins>