A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide
您可能感興趣的試卷
你可能感興趣的試題
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 fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.
Permanent magnetism is caused by（）.
A safe fuel system must（）.
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
A head-on situation at night is one in which you see dead ahead a vessel showing（）.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.
A hand held instrument used to measure distances between objects and the ship is a（）.
It is not necessary to declare（）in MARITIME HEALTH DECLARATION.