电除尘器检修前，应办理（）。 ["动火许可证","检修许可证","生产许可证"]
You have a server that runs Windows Server 2003 Service Pack 2 (SP2). The server contains one volume that has 60 GB of used space. You create an Automated System Recovery (ASR) backup. You lose the ASR floppy disk. You need to create an ASR floppy disk for the server. You must achieve this goal in the minimum amount of time. You insert a formatted floppy disk into the server. What should you do next? （） [" From Windows Backup, run the ASR Wizard."," From Windows Backup, back up the system state to floppy disk."," From the %systemroot%\\repair folder, copy asr.sif, asrpnp.sif, and setup.log to the floppy disk."," From the %systemroot%\\inf folder, copy windows.adm, asroc.inf, and asroc.pnf to the floppy disk."]
将淬火的钢加热到A1线以下的任意一个温度，一段时间后冷却下来的热处理方法叫（） ["正火","回火","退火","淬火"]
施工质量控制应以控制（）的因素为基本出发点。 ["人","材料","机械","方法"]
一个关系若存在（）函数依赖和（）函数依赖，则必然会造成数据冗余和操作异常。
学生关系中的院系号属性与院系关系中的院系号主码属性相对应，则（）属性为（）关系中的外码。
