单项选择题
The International SafetyNet Service is able to address the call to（）.
A.all vessels
B.selected groups of ships
C.a particular ship
D.A, B, C are all right
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相关考题
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单项选择题
DSC distress relays can be transmitted by either（）or（）.
A.a coast station/a ship station
B.an EPIRB/a SART
C.ARQ/FEC
D.a back-up satellite/a land SAR unit -
单项选择题
On-scene communications will normally take place between（）.
A.ship in distress and assisting units
B.NCS and RCC
C.RCCs and „0n-scene commander‟ or “co-ordinator surface search”
D.ship in distress and coast station -
单项选择题
（）are used for distress alerting as a rule.
A.SES/DSC/EPIRB
B.SART/radiotelephone
C.COSPAS-SARSAT
D.both B and C
