For which two SQL statements can you use the Flashback Table feature to revert a table to its previous state？（） UPDATE TABLE。 CREATE CLUSTER。 TRUNCATE TABLE。 ALTER TABLE MOVE。 INSERT INTO···VALUES。 ALTER TABLE···DROP COLUMN。 ALTER TABLE···DROP PARTITION。
单位工程完工验收由（）主持。 A.质量监督机构 。 B.监理单位 。 C.上级主管单位 。 D.项目法人。
Which additional application must be installed in order to use WebSMIT？（） Mozilla for AIX。 An Apache compliant Web server。 Web Based System Manager （WebSM）。 Websphere Application Server Community Editio。
The instance abnormally terminates because of a power outage. Which statement is true about redo log filesduring instance recovery（） Inactive and current redo log files are required to accomplish recovery.。 Online and archived redo log files are required to accomplish instance recovery.。 All redo log entries after the last checkpoint are applied from redo log files to data files.。 All redo log entries recorded in the current redo log file until the checkpoint position are applied to data file。
铅酸蓄电池正极板正常状态为（）。 深褐色。 浅褐色。 银灰色。
Which is an /SQL*Plus command? （）
