Windows中，用键盘选择对话档中内容或命令按键时，只需连续按下（），则亮各矩形区和命令按钮间移动。
参考答案：ＴＡＢ
关于放线菌病特点的描述，错误的是（）
A.内源性感染
B.常伴有多发性瘘管形成
C.感染病灶常排出硫黄样颗粒
D.多为面颈部软组织化脓性感染
E.主要依靠抗体诊断
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）.
A．waterfall model
B．workflow reference model
C．evolutionary model
D． spiral model
