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（2）处填（）

A.workflow engines

B.processes

C.workflow threads

D.tasks

产妇郑某住院分娩，分娩过程中由于医护人员操作错误，造成郑某大出血死亡。此后其家属所采取的下列哪项行为是不恰当的（）

A.要求医院方就患者死亡给出合理解释

B.要求死者家属在场的情况下封存病历

C.要求将死者尸体冻存在医院停尸房，待5天后进行尸检

D.要求死者生前的主治医生先行赔付

E.要求进行医疗事故鉴定