In a new installation of Oracle Database 11g， you perform these activities： 1：Organize software and data on different subdirectories to avoid poor performance. 2：Use consistent naming conventions for database files. 3：Separate administrative information pertaining to the database in different directories. Which option corresponds to the type of activities you performed（） Oracle Managed Files。 Oracle Grid Architecture。 Optimal Flexible Architecture。 Oracle database architecture。 Automatic Storage Management。
下面电泵系统的三种流程中，完全正确的是（） 电泵供电流程：油气分离器→多级离心泵→单流阀→池油阀→油管→井口→输油系统。 电泵抽油系统：地面电网→变压器→控制箱→接线盒→电缆→电机。 电力讯号传输系统：井下压力检测装置→电机绕组→电缆→地面电。
Which statement is true？（） Compilation fails because the hashCode method is not overridden.。 A HashSet could contain multiple Person objects with the same name.。 All Person objects will have the same hash code because the hashCode method is not overridden.。 If a HashSet contains more than one Person object with name="Fred"， then removing another Person， also with name="Fred"， will remove them all.。
In which scenario， will you issue the following command？（） RMAN> REPORT NEED BACKUP DAYS 7； to configure RMAN to maintain backup information in the RMAN repository for seven days。 to configure RMAN to maintain backup information in the control file for at least seven days。 to display the list of files that have not been backed up for the last seven days。 to display the list of files that must be backed up within seven day。
氮源
《工程建设强制性条文》（水利工程部分）规定，沥青混凝土防渗墙施工时（）。
