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问题:

[单选题] ( ) is exactly analogous to a marketplace on the Internet.

A、E-CommerceB、E-CashC、E-MailD、E-Consumer

问题:

[单选题] ( ) is used to model aggregates of information and the relationships these aggregates have to other.

A、flow diagramB、Entity relationship diagramC、Sequence diagramD、Structure diagram

问题:

[单选题] ( ) must be between on-line deployment and final acceptance.

A、Detailed designB、Test runC、Internal testingD、Contract signing

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