单项选择题
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
The transmission of a（）indicates that a ship is in dist...
单项选择题The transmission of a（）indicates that a ship is in distress and requires immediate assistance.
A.urgent traffic B.distress alert C.routine traffic D.NAVTEX message
