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
What is the MOST irritating to the skin?（）
The radiotelegraph alarm signal is（）.
Which is NOT a distress signal?（）
Tripping defects in anchors frequently occur in（）.
To reduce mild fever the MOST useful drug is（）.
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）
There is not（）depth of water around the area centered at the lighthouse.
When testing a Class A EPIRB you will know the EPIRB is working properly if you hear on 99.5 Mhz FM or any vacant frequency on a nearby AM radio（）.
There is plenty of（）at this area.
What does the term TO NAVIGATE WITH CAUTION mean?（）.