用户账号中包含有（）。 ["用户的名称","用户的密码","用户所属的组","用户的权利和权限"]
数学学习的几个阶段（） ["输入阶段","相互作用阶段","操作阶段","输出阶段"]
The maximum theoretical stress that can be developed on a guy in a yard and stay rig is limited by the（）. ["lifting capacity of the winch","location of the boom","position of the guy","weight of the load"]
下列属于Windows 2000活动目录的集成性的管理内容是（）。 ["用户和资源管理","基于目录的网络服务","基于网络的应用管理","基于共享资源的服务"]
简述弹性密封的优、缺点。
厂务公开制度的负责人、相应机构．指导原则以及公开事项分别是什么？
