正确答案: D

It backs up the data files and archived log files to tape, making two copies of each data file and archived log file

题目：You issued the following commands to configure setting in RMAN;Then you issued the following command to take the backup:RMAN> BACKUP DATABASE PLUS ARCHIVELOG;Which statement is true about the execution of the above command?（）

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学习资料的答案和解析：

[单选题]自然循环锅炉在停炉并压力降到等于当地大气压后方可放水。当有胀接管口和锅炉有缺陷时，放水温度不得高于（）℃。

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