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)处填()
A. waterfallmodel
B. workflowreferencemodel
C. evolutionarymodel
D. spiralmodel
张某,女,19岁。因急起高热,显著头痛、肌痛、关节痛、乏力、咽干、食欲减退2天,伴鼻塞、流涕。眼结膜及咽部充血,肺部可闻及干啰音,拟诊"流行性感冒"。该病传染性最强的时期是()
A. 潜伏期~恢复期
B. 潜伏期~病后1天
C. 病后2~3天
D. 病后4~6天
E. 病后6~8天