单项选择题
A.transmit distress signal B.send response signal C.transmit the signal of ship’s position D.be started by X-band radar
The source of energy fitted in GMDSS complying vessels ...
单项选择题The source of energy fitted in GMDSS complying vessels must be（）.
A.the main source of energy B.emergency source of electrical power C.the reserve source of energy D.all of above
The NCS of INMARSAT-A system in the IOR is in（）.A.Goonh...
单项选择题The NCS of INMARSAT-A system in the IOR is in（）.
A.Goonhilly, UK B.Yamaguchi, Japan C.Perth, Australia D.Southbury, USA
The position of the INMARSAT satellite over the Atlanti...
单项选择题The position of the INMARSAT satellite over the Atlantic Ocean Region-W is（）.
A.180E above the equator B.64.5 E over the IOR C.15.5W along the straight line D.55.5W above the equator
