单项选择题
A.the drive pump B.the drive motor C.the warp end D.the purchase
The （） is used for hauling in or letting out the wires ...
单项选择题The （） is used for hauling in or letting out the wires or ropes.
A.windlass B.anchor capstan C.turning gear D.winch barrel
（） may be fitted for operating the derrick topping lift...
单项选择题（） may be fitted for operating the derrick topping lift (the wire which adjusts the derrick height).
A.A capstan B.A hold C.A warp end D.A mooring drum
（） provides the head or pressure to supply the domestic...
单项选择题（） provides the head or pressure to supply the domestic water where required.
A.The compressed air B.The compressing air C.The transfer pump D.The head tank
