锅炉的热效率是指（）。
You have an Automatic Storage Management （ASM） instance managing the database files of your production database. The database contains ASM files and non-ASM files. Using Recovery Manager（RMAN）， you migrate the complete production database to use the ASM instance. Which statement is true？（） RMAN would relocate all the database files to an ASM disk group.。 RMAN would change the file definitions in the control file to use the ASM but would not relocate the database files physically.。 RMAN would relocate all the data files to an ASM disk group and other files to an operating system location， defined using Oracle Managed Files （OMF）.。 RMAN would relocate the ASM files to an ASM disk group and the non-ASM files to an operating system location， defined using OMF。
教育的直观手段有（）、（）、（）三种。
A system has a mirrored data volume group that has a filesystem /data of 10 logical partitions. How many physical partitions will the filesystem have？（） 1。 2。 10。 20。
在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。
交流母线B相的相色漆规定为（）。
