蒸汽应监督的项目有（） 硬度。 二氧化硅含量。 碱度。 PH值。 电导率。
对于确定企业大中小的标准上，许多学者都坚持运用（） 相对性原则。 地域性原则。 时间性原则。 差异性原则。
A retail customer is looking at ways to reduce power requirements. They are considering deploying two hundred IBM HS22 blades running Red Hat Linux in the IBM BladeCenter E chassis. The customer has already chosen Intel L5640 CPUs to reduce power. Which on-board storage option allows the customer to reduce power consumption of each blade？（） One 50 GB SATA 1.8 inch SSD。 Two 73GB 10K SAS HDD SFF。 Two 31 GB SATA 2.5 inch SSD。 Two 50GB SATA 1.8 inch SSD。
You have lost all your online redo logs. As a result， your database has crashed. You have tried to restart the database and clear the online redo log files， but when you try to open the database you get the following error. SQL> startup ORACLE instance started. Total System Global Area 167395328 bytes Fixed Size 1298612 bytes Variable Size 142610252 bytes Database Buffers 20971520 bytes Redo Buffers 2514944 bytes Database mounted. ORA-00313： open failed for members of log group 2 of thread 1 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 SQL> alter database clear logfile group 2； alter database clear logfile group 2 * ERROR at line 1： ORA-01624： log 2 needed for crash recovery of instance orcl （thread 1） ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log What steps must you take to resolve the error？（） a. Issue the recover database redo logs command. b. Issue the Startup Mount command to mount the database. c. Restore the last full database backup. d. Perform a point-in-time recovery， applying all archived redo logs that are available. e. Restore all archived redo logs generated during and after the last full database backup. f. Open the database using the alter database open resetlogs command. g. Issue the alter database open command. b， a， f。 e， b， a， f。 e， b， a， g。 b， a， g。 c， e， b， d， f。
唐朝贞观时期，在隋朝基础上进一步革新、完善制度。这主要是指（）。①科举制的延用②三省六部制完备③府兵制的健全④租庸调制实行 ①②。 ③④。 ①②③。 ①②③④。
Companycom would like the ability to shrink filesystems. They currently have JFS filesystems. Which of the following is necessary to shrink the filesystems?（）
