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 large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）
It is not necessary to declare（）in the Health List.
An inert gas system installed on a tanker is designed to（）.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
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.
After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.
An inert gas system on a tanker should be used to（）.
Permanent magnetism is caused by（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.