在DB恢复时，对已经提交但更新未写入磁盘的事务执行()。
A、UNDO处理B
暂无解析
翻译：Yettherewasabiggermovementintheairby1750.
TheMississippi,whichissometimescalled________,hasplayedavitalroleinthehistoryoftheUnitedStates.
Hewasspecificallyaskedtowriteaplaythatwouldbe________tothelocalcommunity.
Theword“minister”originallymeant“aservant”,butnowhaschangedto“aheadofaministry”.Thisprocessofmeaningchangeiscalled______.
Whataretheparagraphqualities?
