题目内容

江泽民主席指出信息战的主要形式是（）

A. 电子战和计算机网络战
B. 信息攻击和网络攻击
C. 系统破坏和信息破坏

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血红蛋白报告惯用单位为g／dL，改为法定单位制应为g／L。

A. 正确
B. 错误

塞拉门在列车速度大于5Km/h时，开启的门将自动关闭。（）

A. 正确
B. 错误

David managed to accidentally delete the datafiles for database called DSL. He called Heber and Heber tried to help but he managed to delete the control files of the database. Heber called Bill and Bill saved the day. They are using a recovery catalog for this database. What steps did Bill perform to recover the database and in what order？（） a. Restored the control file with the RMAN restore controlfile command. b. Mounted the DSL instance with the alter database mount command. c. Restored the datafiles for the DSL database with the RMAN restore command. d. Opened the DSL database with the alter database open resetlogs command. e. Recovered the datafiles for the DSL database with the RMAN recover command. f. Started the DSL instance. g. Connected to the recovery catalog with RMAN.

A. a， b， c， d， e， f， g
B. b， c， d， g， f， e， a
C. g， f， a， b， c， e， d
D. c， a， d， b， f， e， g
E. g， f， a， b， e， c， d

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