A.cannot be made with salt water
B.is heavierthan oil and sinks below its surface
C.is corrosive and to fire fighters
D.conducts electricity
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A.apply left rudder
B.throw the crew a life preserver
C.begin backing your engines
D.position your vessel to windward and begin recovery
A.r.p.m
B.p.r.m
C.m.p.r
D.p.m.r
A.convey
B.convoy
C.escort
D.conform
A.equipped
B.rigged
C.put on
D.put off
A.Longitudinal
B.Transverse
C.Vertical
D.Centerline
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The mean draft of a ship is the draft（）.
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ECDIS must be able to perform all of the following EXCEPT（）.
A tide is called diurnal when（）.
The circulation around a low pressure center in the Northern Hemisphere is（）.
Full details of all lights and fog signals are shown on（）.
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
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Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.