㈠1.我认为电商运营的成本主要有网络技术和网络建设成本。吸引消费者的方法有促销活动、打折活动等等。 2.袜子的成本：商家45％,人工15%，布料厂家20%，品牌20%。 3.http://www.businessdictionary.com/definition/value.html
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2.A business model describes the rationale.The process of business model construction is part of business strategy. business strategy rationale business process organization https://en.m.wikipedia.org/wiki/Business_model
