题目内容
Which of the following e-commerce models have multiple participant types?
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What is the development trend of e-commerce reflected by the rapid development of online transactions and payment products?
When there is a dispute in an e-commerce transaction, the ways to resolve the dispute are________.
When booking a ticket, sometimes it is found that the accompanying hotel consumption option is checked by default, which is a problem of ________.
Electronic data is easy to change, leading to the characteristics of ________ in e-contracts.
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