单项选择题
A.FEC and ARQ B.satellite and terrestrial communications C.radio and telex D.NBDP
With the help of modern technology, ships are able to r...
单项选择题With the help of modern technology, ships are able to receive automated broadcast of safety messages（）.
A.by day or at night B.almost round the clock C.somewhat and sometime D.from sunrise to sunset
When the power of a SART is on , it will（）.A.transmit d...
单项选择题When the power of a SART is on , it will（）.
A.transmit distress signal B.send response signal C.transmit the signal of ship‟s position D.be interrogated by X-band radar
The SART should provide a（）indication of its correct op...
单项选择题The SART should provide a（）indication of its correct operation and should also inform survivors when it is interrogated by radar.
A.sight or sound B.seeing or sounding C.visual or audible D.seeing or hearing
