Which is the correct command to back up the database， back up the archived redo logs， and then remove the backed-up archived redo logs？（） backup database。 backup database and archivelogs。 backup database plus archivelogs。 backup database plus archivelog delete input。 backup database and archivelog delete input。
下列关于梁中钢筋保护层厚度的说法，正确的是（）。 主筋表面至梁表面的距离。 主筋形心至梁表面的距离。 箍筋表面至梁表面的距离。 箍筋形心至梁表面的距离。
When a staging server is used as an environment for testing new data in a default WebSphere Commerce installation， which of the following are true about the staging server？（） The database has a subset of the tables in the production server database.。 The database has a copy of selected data from the production database。 The database logs changes for later propagation.。 The database is accessed as read-only to prevent data corruption.。 The database includes all user and order data for offline processing.。
An administrator received a call from a user whose PC crashed while using vi to edit a file. The user wants the edited file back. Where should the administrator look for the file（） /tmp。 /var/preserve。 /var/tmp/$USER。 $HOME/.vi。
如何评价南京国民政府的改订新约运动？
An administrator has received an update CD with the latest technology level for AIX 5.3. The current operating system level of the server is at base AIX 5.3.
What action needs to be taken to apply the new technology level to the server？（）
