A、time
B、space
C、length
D、visibility
更多“The crane is usually mounted on a pedestal to offer adequate （） to the operator.”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、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、A. Dry cargo is usually stowed in the hold. B、B. Dry cargo is usually stowed at the hatch. C、C. Wet cargo is usually stowed in the hold.
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
A、A.Radio communications allow the crane operator to disregard the use of hand signals B、B.The crane operators and signalman must be familiar with the correct hand signals C、C.The forward cranes can be operated from the bridge D、D.The aft cranes can be operated from the aft steering station
A、The work of opening and closing hatches is usually done by crew members. B、The work of opening and closing hatch covers is usually done by crew members. C、The work of opening hatch covers is usually done by crew members. D、The work of closing hatch covers is usually done by crew members.
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