搜题，就来89问答库（）are used widely in the operation of warehouse and distribution center andform the basic handling device for a number of selection system.
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（）are used widely in the operation of warehouse and distribution center andform the basic handling device for a number of selection system.
- A: Cranes
- B: Conveyors
- C: Forklifttruck
- D: Pallets
请帮忙给出正确答案和分析，谢谢！
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