單項(xiàng)選擇題Which is a distress signal? （）

A.A triangular flag above or below a ball
B.The International Code Signal of distress indicated by "JV"
C.A green smoke signal
D.Flames on the vessel as from a burning tar barrel


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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題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

3.單項(xiàng)選擇題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

4.單項(xiàng)選擇題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

5.單項(xiàng)選擇題Which action should you take after sending a false distress alert on VHF?（）

A.Send a DSC cancellation message on Ch-70
B.Make a voice announcement to cancel the alert on Ch-16
C.Make a voice announcement to cancel the alert on Ch-13
D.Make a voice announcement to cancel the alert on Ch-22A