A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide
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A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center
A.one control
B.two controls
C.three controls
D.none of the above
A.anchored
B.underway but not fishing
C.tending a small fishing boat
D.fishing by trawling
A.loss of life
B.an injury requiring only first aid
C.$(SA)10，000 in property damage
D.loss of equipment which doesn't reduce the vessel's maneuverability
A.the other services are run off a reducing station with a pressure gage
B.one of the required pumps is kept available for use on the fire main system at all times
C.no relief valves are installed
D.all of the above conditions are met
最新試題
A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.
A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
Permanent magnetism is found in（）.
A fishing vessel displaying the lights shown is（）.
An inert gas system installed on a tanker is designed to（）.
Please supply 200 tons of fresh water（）my ship.
A fire pump may be used for other purposes if（）.
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.
All ships（）suspected infectious disease on board should radio information to Port Health Officer.
A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a（）.