JDBC是Java程序与____连接的一种机制。
AutoCAD中绘制矩形的快捷键（）
Click the Exhibit button. Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM？（）
A、 Jar A
B、 Jar B
C、 Jar C
D、 Jar D
E、 Jar E
Oracle物理数据库包含（）类型重要的文件。
A、数据文件
B、控制文件
C、参数文件
D、配置文件
A system administrator is currently working on a problem with IBM Support. The administrator feels that their expectations are not being met on this problem. What is the IBM recommended procedure to ensure that the request is handled appropriately？（）
A、Request to change the severity to 1
B、Request to speak to the Duty Manager
C、Request to escalate the problem to development
D、Request IBM to close the incident and reopen the incident with another call.
在奔腾4系统中必须安装多少条DDRSDRAMDIMM才能创建一个“存储体”（bank）？（）
A、1DIMM
B、2DIMMs
C、4DIMMs
D、奔腾4系统主板不支持DDRSDRAM