A.Mayday
B.Pan
C.Safety
D.Interco
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A.SOS sent three times
B.ten one-second dashes with a four-second interval between them
C.twelve four-second dashes with a one-second interval between them
D.twelve one-second dashes with a short interval between them
A.1.5 and greater
B.1.25 and greater
C.1.0 and greater
D.0.5 and greater
A.hold anchor
B.leave anchor
C.let go anchor
D.weigh anchor
A.reduce the length of the cable
B.pay out more anchor cable
C.back the engines
D.swing the rudder several times to work the anchor into the bottom
A.Distress
B.Safety
C.All clear
D.Urgency
最新試題
To prevent a wooden hull from leaking you caulk it（）.
What is the normal length of anchor cable used to anchor a vessel?（）
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）
Which radiotelephone signal indicates receipt of a distress message?（）
The transmission of messages respecting the dangers specified is free（）cost to the ships concerned.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
In radiotelephone communications，the prefix PAN-PAN indicates that（）.
To reduce mild fever the MOST useful drug is（）.
The towing light is a(n)（）.
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.