A、light derrick
B、union purchase
C、topping lift
D、heavy derrick
更多“The（）(千斤索) is a wire used to take the weight off.”相关的问题
A、吊杆的部件有：吊杆支架、鹅颈头、中心稳索、支索、千斤索和千斤索滑车组等。 B、吊杆的部件有：鹅颈头、中心稳索、千斤索、侧稳索、千斤索滑车组和支索等。 C、吊杆的部件有：中心稳索、侧稳索、吊杆支架、鹅颈头、千斤索、和千斤索滑车组等。 D、吊杆的部件有：侧稳索、中心稳索、鹅颈头、吊杆支架、千斤索、和千斤索滑车组等。
A、Etch the wire with acid B、Install a wire seizing on the wire that will be inside the socket C、Ensure the fiber core is well lubricated D、Pour molten babbitt metal into the socket
A、Number of wires in the inner core B、Number of strands per wire rope C、Tensile strength of the wire D、Number of wires per strand
A、Number of wires in the inner core B、Number of strands per wire rope C、Tensile strength of the wire D、Number of wires per strand
A、any wire running fore-and-aft on a ship B、any wire with a fiber core C、a heavy wire extending from the trunk of the mast to the head of the boom D、a heavy wire extending from the mast，atwartships to the deck，to support the mast
A、Keep the wire soft and manageable B、Lubricate the inner wires and prevent wear C、Prevent kinking D、Prevent rotting
A、Factor of safety B、Number of wires per strand C、Number of strands per wire rope D、Number of wires in the core
A、Factor of safety B、Number of wires per strand C、Number of strands per wire rope D、Number of wires in the core
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