A、A.a mooring winch
B、B.a hoisting winch
C、C.a slewing winch
D、D.a luffing winch
更多“The crane jib is raised and lowered by means of （）”相关的问题
A、is the SWL of the crane B、are the SWL of the crane C、the SWL of the crane is D、the SWL of the crane are
A、is the S.W.L.of the crane B、are the S.W.L. of the crane C、the S.W.L. of the crane is D、the S.W.L. of the crane are
A、Taglines are wire rope purchases that raise and lower the jib B、Taglines are wire ropes for horizontal positioning of the rider block C、Taglines can be fastened to corners of vehicles or containers D、The crane might not have taglines installed in its rigging system
A、A.is the S.W.L. of the crane B、B.are the S.W.L. of the crane C、C.the S.W.L. of the crane is D、D.the S.W.L.of the crane are
A、The cranes may be operated independently B、The cranes may be interconnected for twin operation C、When twinned，the crane rotation on the foundation assembly is unlimited D、All of the above
A、A.A centerline crane can never be operated in tandem B、B.One crane is able to work one end of two adjacent hatches C、C.These cranes are more economical and weigh less than outboard-mounted cranes D、D.One crane is able to work both sides of the ship
A、It allows for rotation of the hook in the single mode B、It is required to“twin-up”30-ton pedestal cranes C、It is used to pick up light loads D、It is used to rigidly connect two cranes
客服
TOP
查看正确答案
