You execute the following command to change the status of the SALES tablespace：SQL> ALTER TABLESPACE sales OFFLINE； Which statements describe the effect of the command（） The tablespace would require recovery to go back online.。 A checkpoint is taken on all data files that are associated with the SALES tablespace.。 The sessions that subsequently try to access the objects in the SALES tablespace receive an error。 The new status of the SALES tablespace is recorded in the control file when the database instance isclosed。
下列（）文件格式是AutoCAD软件的输出格式。 放样、dwg。 放样、doc。 放样、exe。 放样、txt。
一个好的审阅者可以对商业计划书提供一种外部的客观评价，这种外部审阅者主要指（） 管理团体。 律师。 生产技术专家。 会计师事务所。 市场营销专家。
人身意外伤害保险的含义之一是被保险人必须有（） 因客观事故造成死亡或残疾的结果。 因客观事故造成伤残或疾病的结果。 因人为事故造成死亡或残疾的结果。 因人为事故造成伤残或疾病的结果。
You executed the following command in Recovery Manager （RMAN）： RMAN> REPORT NEED BACKUP days 3； What is the output of this command？（） a list of files that require a backup within three days。 a list of files requiring more than 3 days of archive logs to apply。 a list of files that RMAN recommends be backed up only once in every three days，based on low volatility。 a list of files for which a backup has already been performed in the last three days and which is required to be backed up again based on the high number of transactions performed on them。
设备综合管理的理论基础是（）。
