A.of
B.to
C.on
D.with
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A.to
B.on
C.of
D.for
A.urgency or an emergency
B.the vessel's national identity signal
C.a group from the general signal code
D.a group from the medical signal code
A.Hard rubber
B.Canvas
C.Leather
D.Sponge rubber
A.at the lowest point
B.near the batteries
C.at the highest point
D.only when charging is in progress
A.take part
B.watch
C.go to their quarters
D.stay out of the way and do what they want
最新試題
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
Keep clear（）the buoy.
The term PROLONGED BLAST refers to（）.
Smoking in bed on a ship is prohibited（）.
Which statement is TRUE concerning radiotelephones on board towing vessels?（）
Which statement is TRUE with respect to the elasticity of nylon mooring lines?（）.
Which term describes a part of a natural fiber line?（）
In the International Code of signals，a group of three letters indicates（）.
Which spoken emergency signal would you use to call a boat to come assist a man overboard?（）
Which may ignite fuel vapors?（）