当列车管定压为500kPa,常用限压阀限制的压力值应调整为()。 410~430kPa。 420~440kPa。 310~350kPa。 340~360kPa。
Tape streaming is not happening while performing RMAN tape backup. On investigation, you find that it is not because of the incremental backup or the empty file backup and that RMAN is sending data blocks to the tape drive fast enough. What could be a solution to make tape streaming happen during the backup?() Configure backup optimization。 Configure the channel to increase MAXOPENFILES。 Configure the channel to increase the capacity with the RATE parameter。 Configure the channel to adjust the tape buffer size with the BLKSIZE optio。
食品添加剂
被动扩散
A system administrator has filesystems that should not be mounted during system startup. How can the system administrator prevent the /data filesystem from being mounted during subsequent boots?() mount -no /data。 chfs -A no /data。 mount -t nfs /data。 chfs -a type=nfs /data。
关于石化行业常用的不同价格体系下产品体系价的说法,正确的是()。