In your production database， you observe that users’ transactions are consuming a lot of resources and you plan to impose resource restrictions by using Resource Manager. For which three resources can you enable usage restrictions by using Resource Manager？ （） ["CPU usage","degree of parallelism","number of open cursors","number of sorts performed","idle time for blocking sessions","number of disk I\/O operations performed","number of memory I\/O operations performed"]
EDI的产水电导率（） ["≥5us\/cm","≤5us\/cm","≤10us\/cm"]
On the development database rac0， there are six raw devices： /dev/raw/raw1 through /dev/raw/raw6. /dev/raw/raw1 and /dev/raw/raw2 are 8GB each， and the rest are 6GB each. An existing disk group +DATA1， of NORMAL REDUNDANCY， uses /dev/raw/raw1 and /dev/raw/raw2. Which series of the following commands will drop one of the failure groups for +DATA1， create a new disk group +DATA2 using two of the remaining four raw devices， and then cancel the drop operation from +DATA1？ （） ["A","B","C","D"]
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 optioncorresponds to the type of activities you performed（） ["Oracle Managed Files","Oracle Grid Architecture","Optimal Flexible Architecture","Oracle database architecture","Automatic Storage Management"]
下列表述中不符合鸦片战争前夕形势的是（）。 ["欧美资本主义国家迅速崛起","自然经济在中国仍然占统治地位","在中英正当贸易中中国处于入超地位","英国向中国走私鸦片在激增"]
请人赴约说（），对方来信说（），自己住家说（）。
