The (1) is a general description of the

问题单项选择题

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) . In a workflow system, a process is specified using the process definition tool. Usually, processes are defined in terms of a (3) , which consists of (4) indicated using a circle, and (5) shown as a rectangle. These two components can be linked by means of a directed arc.

5（）

A．transmitters

B．transitive

C．transitions

D．transformations

答案

参考答案：C

解析：

[参考译文] 工作流参考模型(Workflow Reference Model)是由WFMC(工作流管理联盟)给出的工作流管理系统的通用体系结构描述。在这个参考模型中，给出了工作流管理系统的主要构成部件和相关的接口。工作流执行服务是工作流管理系统的核心，通常由多个工作流引擎(workflow engines)构成。工作流管理系统的另一个重要组成部分是用于定义过程的过程定义工具，目前多采用Petri网(Petri Net)进行过程定义。Petri网由库所(places)和变迁(transitions)组成。在图形上，用圆圈表示库所，用矩形表示变迁。库所和变迁之间由有向箭头连接。