由原材料供应商、制造商、批发商、零售商和最终消费者组成的供需网络。The supply and demand network composed of raw material suppliers, manufacturers, wholesalers, retailers and final consumers.
由原材料供应商、制造商、批发商、零售商和最终消费者组成的供需网络。The supply and demand network composed of raw material suppliers, manufacturers, wholesalers, retailers and final consumers.
A.正确
B.错误
正确答案：正确