單項(xiàng)選擇題

Which is NOT a distress signal? （）

A.A continuous sounding with any fog signal apparatus
B.A signal sent by radiotelephone consisting of the spoken word "Mayday"
C.An International Code Signal of N.C.
D.The firing of green star rockets or shells

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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

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