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 head-on situation at night is one in which you see dead ahead a vessel showing（）.
A fire pump may be used for other purposes if（）.
A green buoy has a yellow triangle on it. This is a(n)（）.
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.
A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
Cargo transfer operations on a tank vessel need NOT be stopped when（）.
Permanent magnetism is caused by（）.
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.
An obstruction on a helodeck is any object that might present a hazard to the（）.
For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.