题目内容
E-businesses can be divided into the following categories: __________ (B2C), __________ (B2E), __________ (B2G) and so on.
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The most commonly used e-business models include: __________(电子采购), E-malls, __________(电子拍卖), __________ __________(虚拟社区), Value-chain Integrators（价值链集成商）.
__________(黑客) are one of the great threats to the security of e-businesses.
A business model is defined as the organization of product, service and information flows, and the source of revenues and benefits for suppliers and customers.
Traditional business system has more security risks than e-business system.
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