关于混凝土养护措施的说法，错误的是（）。 ["应在混凝土浇筑完毕后的l2h以内对混凝土加以覆盖并保湿养护","对于掺用缓凝外加剂或有抗渗要求的混凝土，浇水养护的时间不得少于21日","混凝土养护应采用与拌制用水相同的水","混凝土强度达到设计强度的1.2N\/mm2<\/sup>前，不得在其上踩踏或安装模板及支架"]
Over the course of a day，a department performed multiple DML statements （inserts， updates， deletes） on multiple rows of data in multiple tables. The manager would like a report showing the time， table name，and DML type for all changes that were made. Which Flashback technology would be the best choice to produce the list？（） [" Flashback Drop"," Flashback Query"," Flashback Transaction Query"," Flashback Versions Query"," Flashback Table"]
金融机构应当履行大额交易和可疑交易报告义务，向（）报送大额和可疑交易报告。 ["保监会","中国人民银行","政府","中国反洗钱监测中心"]
Which two statements are true regarding transactions in an Oracle database（） ["Multiple transactions can use the same undo segment.","A transaction is assigned an undo segment when it is started.","More than one transaction cannot share the same extent in the undo tablespace.","The transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used."]
在基于用例的面向对象分析过程中，定义交互行为的关键在于通过描述分析类实例之间的（）将用例的职责分配到分析类中。 ["消息传递","关联关系","继承关系","上下文关系"]
将校长的办学理念转化为全校教职员工的共识，是学习型组织建设的（）。
