A customer has ordered a rack， a p650， two p630s， and two p615s. During a conversation on installation planning， the pSeries technical specialist recognizes that the customer expects the rack to arrive as one unit. However， the specialist knows that the p650 will be racked， but the other systems will arrive separately. In fact， the other systems are CSU （Customer Set Up）. Why should the specialist immediately inform the customer that additional racking is the customer’s responsibility？（）
A、Because additional systems would require more power receptacles
B、Because the customer may need to do additional facilities planning
C、Because the customer needs additional funding to cover the services
D、Because postponing the eventual discussion will likely lead to customer dissatisfaction
You are connected to Recovery Manager （RMAN） without a recovery catalog. There is no copy of the control file available. You want to restore the control file from an autobackup. To retrieve the autobackup，you need the database ID （DBID）. In which two sources would you find the DBID？ （）
Athe trace file
Bthe alert log file
Can RMAN session log file
Dthe server parameter file
Ethe formatted name of a control file autobackup
请比较Java的异常处理机制与其它语言异常处理机制。
以下哪项不是工程造价估算所依据的项目（ ）。
A、购入的设备硬件
B、网络设备
C、远程通信线路与接入城域网租用线路
D、服务器与客户端设备
计算机锁定屏幕的快捷键为（）。
A、Alt+L
B、Ctrl+L
C、Win+L
D、Ctrl+Alt+L
一个用户有两个EIDE硬盘驱动器，在第二个EIDE硬盘驱动器上有一个类似于CD-RW的DVDROM，那么用户应该怎样添加另一个硬盘驱动器（）。
A、用户需要用到一个由四个插头的电缆线
B、主板上只有连个控制器，用户需要在装上一个额外的控制卡
C、EIDE技术有局限性，所以用户不能添加额外的EIDE设备
D、如果用户安装上另一个设备，那么他的电脑会变慢