单项选择题
A.longitudinally framed B.transversely framed C.cellular framed D.web framed
A shepherd’s crook is used to（）.A.lower spring buoys in...
单项选择题A shepherd’s crook is used to（）.
A.lower spring buoys into the water B.find an anchor after the buoy has been lost C.transfer a pennant wire to the anchor handling boat D.clean chain as it is hauled into the rig
A set of interior steps on a ship leading up to a deck ...
单项选择题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
A set of clamps that are latched onto the drill pipe to...
单项选择题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
