电力施工单位的（）应当按照国家有关规定接受安全教育培训，考核合格方可上岗。 主要负责人。 项目负责人。 技术负责人。 专职安全生产管理人员。 特种作业人员。
学习策略的教学方法有（）。 指导教学法。 程序化训练法。 定形训练法。 交互式教学法。 合作学习法。
作为质押品的定期存单不包括（）。 未到期的整存整取存单。 存本取息存单。 外币定期储蓄存款存单。 定活两便存单。
You work as a database administrator for Supportcenter.cn. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？（） 3 hours。 6 months。 until last year。 until last commit。 until the point when the undotablespacewas refreshed。 until the database is shut down and the memory erased。
简述吗啡治疗心源性哮喘的作用机制。
A new customer wants to install a Power 750 in a warehouse location that has no local staff to support it. They are concerned about hardware support and would like to have the system notify IBM service if there is an issue.Which actions will address the customer concern?（）
