多项选择题
Radio frequency identification can be used for a variety of purposes,such as A. To track inventory to retail stores B. To tag livestock on farms C. To track the location of doctors in a hospital. D. To track the location of supplier.
Radio frequency identification can be used for a variety of purposes,such as A. To track inventory to retail stores B. To tag livestock on farms C. To track the location of doctors in a hospital. D. To track the location of supplier.
连续，区域
则
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