A、principle
B、medium
C、instruction
D、voltage
更多“For occasional heavy loads, two cranes can be arranged to work together. The operating （） for deck crane motors may be hydraulic electric.”相关的问题
A、Heavy derrick is used for lifting large heavy cargo. B、Derrick is used for lifting large heavy cargo. C、Heavy derrick is used for lifting dry bulk cargo. D、Derrick is used for lifting dry bulk cargo.
A、can be released while under strain B、is used for boat falls C、is used for extra heavy loads D、is used for light loads only
A、Can be released while under strain B、Is used for boat falls C、Is used for extra heavy loads D、Is used for light loads only
A、have a large amplitude of roll B、provide a comfortable ride for the crew and passengers C、have drier decks in heavy weather D、be likely to have cargo shift in heavy weather
A、have a large amplitude of roll B、provide a comfortable ride for the crew and passengers C、have drier decks in heavy weather D、be likely to have cargo shift in heavy weather
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