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
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相关考题
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单项选择题
According to the basic concept of GMDSS,（）can be rapidly alerted to a distress incident.
A.only SAR authorities on land
B.all ships in a very large sea area
C.the nearest coast stations and port radios
D.the SAR authorities ashore as well as ships in the vicinity of the casualty -
单项选择题
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
A.countries
B.states
C.names
D.groups -
单项选择题
At least（）two-way VHF radiotelephone apparatus shall be provided on every cargo ship of 300 tons gross tonnage and upwards but less than 500 tons gross tonnage.
A.one
B.two
C.three
D.four
