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單項(xiàng)選擇題

A set of interior steps on a ship leading up to a deck from below is know as（）.

A.a companion way
B.'tween-decks
C.stairs
D.Any of the above are acceptable

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單項(xiàng)選擇題

A set of clamps that are latched onto the drill pipe to allow the driller to raise or lower the drill string out of or into the hole are the（）.

A.lifts
B.collars
C.elevators
D.clamps

單項(xiàng)選擇題

A series of trays with sieves that vibrate to remove cuttings from the circulating fluid in rotary drilling operations is called the（）.

A.shale shaker
B.settling pit
C.desilter
D.desander