单项选择题
A.keep silence B.forbid transmission C.change information D.impose
Particular care should be（）in selecting CESs in areas w...
单项选择题Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
A.taken B.take C.took D.taked
Before GMDSS, if the radio officer on board is serious ...
单项选择题Before GMDSS, if the radio officer on board is serious ill,（）.
A.someone else will take his place B.the captain will take charge of his work C.nobody will be capable of doing his work D.anyone else will use the radio equipment
What following is not among the function of SOLAS ships...
单项选择题What following is not among the function of SOLAS ships?（）
A.receive shore-to-ship distress alerting B.transmit ship-to-shore distress alerting C.receive message for public correspondence D.transmit and receive locating signals
