[多选] What are two circumstances for which it may be advisable to use the  silent uninstallation method instead of an interactive method？（）

You issued the following commands to configure setting in RMAN; RMAN> CONFIGURE DEVICE TYPE sbt PARALLELISM 1; RMAN> CONFIGURE DEFAULT DEVICE TYPE TO sbt; RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE sbt TO 2; RMAN> CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE sbt TO 2; RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2; 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?（） The backup will terminate because the FORMAT clause was not configured for the channel。 It backs up two copies of data files to tape and disk, and two copies of archived log file on tape。 It backs up the data files and archived log files to disk, making two copies of each data file and archived log file。 It backs up the data files and archived log files to tape, making two copies of each data file and archived log file。 嗜冷微生物为什么能在低温环境生长繁殖？ 锅炉上水期间，应控制汽包上下壁温差不超过（）。 20℃。 80℃。 40℃。 离心泵卡圈（口环）径向间隙的大小取决于输送的介质和（）的大小。 在同时使用两系列输油作业时，一个系列输油后压力异常时，此时你认为应怎样处理？（） 停止两系列输油管线的泵、关闭外输控制盘、关闭（SDV-3217）。 停止异常高压的那条管线的泵。 停止异常高压的哪条管线，管闭外输控制盘，关闭（SDV-3217）。 What are two circumstances for which it may be advisable to use the  silent uninstallation method instead of an interactive method？（）