单项选择题
A.Mobile Satellite Information B.Motor ship Identification C.Most Serious Information D.Maritime Safety Information
The FEC mode is for（）from（）station to two or more other...
单项选择题The FEC mode is for（）from（）station to two or more other stations when available.
A.receiving messages/one station B.transmission/ one coast station or ship C.communicating /one ship D.contacting/other
The SART should have sufficient battery capacity to ope...
单项选择题The SART should have sufficient battery capacity to operate in the stand-by condition for（）hours and should continuously work for（）hours.
A.120/20 B.56/18 C.100/16 D.96/8
It is required that ships proceeding at sea should keep...
单项选择题It is required that ships proceeding at sea should keep continuous watch on（）.
A.VHF channel16 and 13 B.appropriate DSC distress and safety frequency C.INMARSAT TDM message channel D.VHF channel 70 and channel 8
