【单选题】主船体两舷舷侧在后部的线型弯曲部分称之为( )
【单选题】“若a是实数,则︱a︱≥0”这一事件是 [ ]
【多选题】You require the Oracle server to manage the undo segments and space among various active sessions automatically. You created an undo tablespace, UNDO_TBS1, in your database. Which two additional steps...
A.
Set the UNDO_RETENTION parameter to 900 or more.
B.
Create an initial undo segment in the undo tablespace.
C.
Enable the retention guarantee for the undo tablespace.
D.
Set the UNDO_TABLESPACE parameter to UNDO_TBS1.
E.
Set the UNDO_MANAGEMENT initialization parameter to AUTO.
【单选题】主船体两舷舷侧在后部的线型弯曲部分称之为:
【单选题】若事件A是必然事件,事件B是不可能事件,则事件A与B的关系是( )
【简答题】在UNDO命令执行之后,立即键入什么命令可以将UNDO 命令取消重新执行一次 (A)ERASE (B)REDO (C)OOPS (D)REDRAW
【单选题】若a为实数,则“二次根式 a 2 ≥0 ”这一事件是( )