（）不能担任工作票签发人。 ["工长、调度员","班组安全员","段总工程师指定人员","所主任、技术人员"]
Windows Server 2003 Active Directory中所有资源都称为对象，每个对象都有一个唯一的安全标识符，英文缩写为（）。 ["LISD","SID","ADSID","ID"]
The purpose of the purge valve at the top of the condenser in a refrigerating system is to（） ["remove any air that may accumulate in the system","take out unpleasant fumes from the refrigerant","vent off excess refrigerant in an emergency","permit opening the refrigerating system for cleaning and inspecting"]
设备操作者对设备必须做到哪“四会”？
来自Active Directory目录中的不同GPO设置冲突时，（）层次上的GPO优先权最高。 ["域","容器","OU","子容器"]
故障停运后，程控值班员应做哪些工作？
