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
更多“What is the purpose of the equalizing beam aboard a crane vessel（）.”相关的问题
A、containers are classified as general purpose (dry cargo) container and specific purpose container B、general purpose container (GP) is suitable for the widest varieties of cargo C、specific purpose container is suitable for the specific cargo D、bulk container， reefer container， open-top container are all general purpose containers
A、containers are classified as general purpose (dry cargo) container and specific purpose container B、general purpose container (GP) is suitable for the widest varieties of cargo C、specific purpose container is suitable for the specific cargo D、bulk container， reefer container， open-top container are all general purpose containers
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