手动切断消防主电源,闭合备用消防电源,观察()的投入及指示灯的显示,看消防电源是否符合要求。
A、应急照明
B、备用消防电源
C、事故广播
D、消防水泵
参考答案:B
A project life cycle is a collection of generally sequential project (73) whose name and number are determined by the control needs of the organization or organizations involved in the project. The life cycle provides the basic (74) for managing the project, regardless of the specific work involved.
(73)处填()。
A.phases
B.processes
C.segments
D.pieces
活髓切断术成功的关键因素是()。
A.去尽腐质
B.髓室顶揭除完全
C.止血彻底
D.无菌操作
E.放置盖髓剂