扫描隧道显微镜
Which statement is true regarding the Archiver （ARCn） process，archived log files，and recovery？ （） A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. 。 During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. 。 After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. 。 At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.。
赵树理及其创作在40年代后期获得广泛赞誉，而在50年代以后不断受到各种批评与批判，请分析造成赵树理前后不同遭遇的主客观原因是什么？
Given： What is the result？（） Compilation fails.。 An exception is thrown at runtime.。 The code executes normally and prints "bar".。 The code executes normally， but nothing prints.。
煤矿安全监察人员发现煤矿矿长或者其它主管人员违章指挥工人或者强令工作违章、冒险作业，或者发现工人违章作业的，应当（）。 给予警告。 给予罚款。 立即纠正或者责令立即停止作业。
抹灰工程应分层进行，其中底层主要的作用是（）。
