A.flashing amber light
B.yellow light with the same characteristics as the sternlight
C.all-round yellow light
D.yellow light with the same characteristics as the masthead light
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A.fuel oil
B.sludge
C.oil refuse
D.All of the above
A.Mayday
B.Pan
C.Safety
D.Interco
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
最新試題
What is the primary purpose of a splint applied in first aid?（）
To prevent a wooden hull from leaking you caulk it（）.
To reduce mild fever the MOST useful drug is（）.
The use of the danger signal（）.
What is normally used to pass a mooring line to a dock?（）
There is plenty of（）at this area.
What is the（）of the turning circle in mavoeuvring?
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）
Tripping defects in anchors frequently occur in（）.
In radiotelephone communications，the prefix PAN-PAN indicates that（）.