单项选择题
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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相关考题
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单项选择题
Which condition represents the appropriate time for setting off distress flares and rockets? （）
A.At one hour intervals
B.At half hour intervals
C.Only when there is a chance of their being seen by rescue vessels
D.Immediately upon abandoning the vessel -
单项选择题
Which condition represents the appropriate time for setting off distress flares and rockets? （）
A.Only when there is a chance of their being seen by rescue vessels
B.At half hour intervals
C.At one hour intervals
D.Immediately upon abandoning the vessel -
单项选择题
Which categories of NAVTEX messages may not be selectively rejected through receiver programming?（）
A.Navigational warnings
B.Weather warnings
C.SAR and distress alert information
D.All of the above
