题目内容

Which step do you need to perform to enable a user with the SYSDBA privilege to log in as SYSDBA in iSQL*Plus？（）

A. The user must be granted the database administrator （DBA） privilege.
B. The user must be listed in the password file for the authentication.
C. No special setup is needed for the user to connect as SYSDBA in iSQL*Plus.
D. Set up a user in the Oracle Application Server Containers for J2EE （OC4J） user manager，and grant the webDba role to the user.

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You are working on a new Oracle Database 11g server， where only the software is installed and nodatabase is created. You plan to create a database on this server using the Database Configuration Assistant （DBCA）. Some of the requirements set for your database creation task are： 1：Configure the database to operate in shared server mode. 2：Disable automatic maintenance tasks such as optimizer statistics collection. 3：Configure a naming method to help the remote user connect to the database instance. 4：Use Automatic Storage Management （ASM） for storing the database files. 5：Configure daily database backup to flash recovery area. 6：Configure Enterprise Manager Database Control to manage the database. Which of these requirements can be met while creating the database（）

A. 4 and 6
B. 2，3，4，and 6
C. 1，2，4，5，and 6
D. 1，2，3，4，5，and 6

双作用式压缩机，活塞在一个冲程内吸入和排出（）次气体。

航空摄影测量相对定向的基本任务是（）。

A. 确定影像的内方位元素
B. 将扫描坐标系转换到像平面坐标系
C. 确定两张影像间的相对位置和姿态关系
D. 将立体模型纳入地面测量坐标系

线路工程中间验收随机抽检时，基础工程不少于报验总数的（）。

A. 15%
B. 20%
C. 30%