问题详情

The(71) 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(72) . In a workflow system, a process is specified using the process definition tool. Usually, processes are defined in terms of a(73) , which consists of(74) indicated using a circle, and(75) shown as a rectangle. These two components can be linked by means of a directed arc.
A．evolutionary model
B．workflow reference model
C．waterfall model
D．spiral model请帮忙给出正确答案和分析，谢谢！