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 fishing vessel displaying the lights shown is（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
A jack-up drilling rig being towed must（）.
A safe fuel system must（）.
Permanent magnetism is found in（）.
For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.
A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.
It is not necessary to declare（）in MARITIME HEALTH DECLARATION.
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）