哪些互动属于发布管理的职责（） 检查公司的计算机是否安装了非法软件。 缓存公司的所有授权软件的原始版本。 检查每个可用的软件版本。 处理发布后出现的故障。
当两电源参数完全相同，且之间线路各点参数完全相同，则振荡中心一定在（）。 靠近一侧电源。 靠近另一侧电源。 线路中点。
You performed the RMAN database backup with the KEEP option.Which two statements are true about this backup?（） (Choose two) The KEEP option overrides the configured retention policy。 The KEEP option is an attribute of an individual backup piece。 The backup contains only data files and archived redo log files。 The backup contains data files, the server parameter file and the control file even if the control file auto backup is disabled。
Mary has a view called EMP_DEPT_LOC_VU that was created based on the EMPLOYEES, DEPARTMENTS, and LOCATIONS tables. She granted SELECT privilege to Scott on this view. Which option enables Scott to eliminate the need to qualify the view with the name MARY .EMP_DEP_LOC_VU each time the view is referenced?（） Scott can create a synonym for the EMP_DEPT_LOC_VU bus using the command: CREATE PRIVATE SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonymn.。 Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym.。 Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE LOCAL SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonym.。 Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU ON mary(EMP_DEPT_LOC_VU); then he can prefix the columns with this synonym.。 Scott cannot create a synonym because synonyms can be created only for tables.。 Scott cannot create any synonym for Mary’s view. Mary should create a private ynonym for the view and grant SELECT privilege on that synonym to Scott.。
油气管道系统中的各种仪表是用来测量（）的必要设备。 A、运行参数 。 B、压力 。 C、温度 。 D、流量。
You are performing an incomplete recovery because some important tables have been dropped and purged from the Recycle Bin. Which clause can you NOT use to perform the incomplete recovery by using the RMAN utility？（）
