正确答案: A

A、1.04

题目：对于额定蒸汽压力0.8MPa≤p≤5.9MPa的锅炉，其控制安全门的起始压力为（）倍的工作压力。

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]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?（）

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