A.Roger wilco
B.Romeo，romeo，romeo
C.SOS acknowledged
D.Mayday roger
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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
A.a distinctive signal
B.the Morse Code signal for SOS
C.a computerized voice announcement of Mayday
D.your vessel's International Radio Call Sign
A.Control bleeding
B.Reduce pain
C.Immobilize a fracture
D.Reset the bone
A.An amount equal to the depth of the water
B.Two times the depth of water
C.Three to four times the depth of water
D.Five to seven times the depth of water
A.Carbon disulfide
B.Ethyl alcohol
C.Isoprene
D.Oleum
最新試題
Which is NOT a distress signal?（）
The use of the danger signal（）.
Fog forms when the air（）.
The expression DROP ANCHOR means（）.
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）
To develop maximum anchor holding power，the optimum angle between the anchor’s shank and the mooring lines is（）.
What is normally used to pass a mooring line to a dock?（）
What form of ice is of land origin?（）
There is plenty of（）at this area.