单选题Which EPIRB transmits a distress alert that is received and relayed by an INMARSAT satellite?（）AClass A EPIRBsBClass B EPIRBsCL-Band EPIRBsDCategory I EPIRBs
单选题
Which EPIRB transmits a distress alert that is received and relayed by an INMARSAT satellite?（）
A
Class A EPIRBs
B
Class B EPIRBs
C
L-Band EPIRBs
D
Category I EPIRBs
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单选题Which system may be useful for messages，such as local storm warnings or a shore-to-ship distress alert，for which it is inappropriate to alert all ships in the satellite coverage area?（）ANAVTEXBEGCCAMVERDDSC
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