A.MAYDAY
B.PAN
C.SECURITE
D.ATTENTION
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A.Mayday
B.Pan-pan
C.Securite
D.Safety
最新試題
The best method to stop a vessel from dragging anchor in a sand bottom is to（）.
What are symptom(s) of a ruptured appendix?（）
To prevent a wooden hull from leaking you caulk it（）.
What is required to launch a boat stowed in a crescent davit?（）
The two main types of load cells used in mooring tension gauges are（）.
What is normally used to pass a mooring line to a dock?（）
There is something wrong with our radar．All kinds of objects can’t be clearly（）within the definite range.
The radiotelegraph alarm signal is（）.
Tripping defects in anchors frequently occur in（）.
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.