谈谈个人空间研究在城市规划设计中的意义。
The instance abnormally terminates because of a power outage. Which statement is true about redo log filesduring instance recovery（） ["Inactive and current redo log files are required to accomplish recovery.","Online and archived redo log files are required to accomplish instance recovery.","All redo log entries after the last checkpoint are applied from redo log files to data files.","All redo log entries recorded in the current redo log file until the checkpoint position are applied to data file"]
铅酸蓄电池正极板正常状态为（）。 ["深褐色","浅褐色","银灰色"]
A customer needs to deploy a SAN and connect nine servers running a mix of Windows and Linux. They currently need 12TB， but their growth requirements will be tripled in the near future. They will also consolidate 18 legacy Windows servers onto one system using virtualization software and connect that server to the storage solution. A DS4000 series backup solution needs to be included in the design. Which of the following solutions will satisfy these requirements？（） ["DS4300 with a switched fabric and an x445 running VMWare ESX server","DS4500 with a switched fabric and an x445 running VMWare ESX server","DS4300 SAN with a switched fabric and an x445 running Microsoft Virtual Server","DS4400 Server with an x445 running Virtuozzo VPS"]
移植后养护管理
目前最主要最广泛使用的育种手段是？
