You performed the RMAN database backup having a backupset key number 231 with the KEEP FOREVER option. After some days, you want to change the status of the database backup and you issued the following command: RMAN>CHANGE BACKUPSET 231 NOKEEP; What is the implication of this command?（） [" The backup is deleted."," The backup is marked unavailable."," The backup overrides the backup retention policy."," the backup becomes eligible for deletion according to the existing retention policy"]
（）就是根据成本信息和施工项目的具体情况，运用一定的专门方法，对未来的成本水平及其可能发展趋势做出科学的估计。 ["A.施工成本计划 ","B.施工成本控制 ","C.施工成本预测 ","D.施工成本核算"]
Which of the following commands should be used to monitor the number of bytes read on any given disk？（） [" tprof"," topas"," filemon"," vmstat"]
在信息社会，市场研究最重要的能力是（）。 ["获得充足的信息量","数据统计分析能力","信息辨别能力","调查研究"]
Where do the BOS ODM files reside？（） ["\/etc\/odm","\/usr\/lpp\/odm","\/var\/bosinfo","\/etc\/objrepo"]
发展轴理论
