A.heavy-walled drill pipe
B.tool joint
C.down hole tool
D.drill collar
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A.main brace
B.tow span
C.jockey bar
D.None of the above
A.one sidelight
B.one sidelight and a masthead light
C.one sidelight and two masthead lights
D.both sidelights of a vessel and her masthead light(s)
A.vernier
B.psychrometer
C.hygrometer
D.stadimeter
A.information or regulatory buoy that has lateral significance
B.buoy that is off-station and is marked to warn mariners of its wrong position
C.dual purpose marking used where the ICW and other waterways coincide
D.buoy that was set in error and will be replaced with a red nun buoy
A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide
最新試題
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.
After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
Permanent magnetism is caused by（）.
A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the（）.
It is not necessary to declare（）in the Health List.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
A green buoy has a yellow triangle on it. This is a(n)（）.
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.
Between 1830 hrs and 1850 hrs this day，strong gusty winds（）by my vessel，in consequence of which the vessel’s four mooring lines were broken.