The（1）is a general description of the architecture of a workflow management system used by the WFMC,in which the main components and the associated interfaces are summarizeD） The workflow enactment service is the heart of a workflow system which consists of several（2）. 空白(1)处应选择（）
- A、waterfall model
- B、workflow reference model
- C、evolutionary model
- D、spiral model
正确答案:B
答案解析:有
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