Examine the command： SQL> DBMS_STATS.SET_TABLE_PREFS（’SH’， ’CUSTOMERS’， ’PUBLISH’， ’false’）； Which statementdescribes the effect of the above command（） ["Automatic statistics collection is stopped for the CUSTOMERS table.","Statistics for the CUSTOMERS table are locked and cannot be overwritten.","Existing statistics for the CUSTOMERS table become unusable for the query optimizer.","Subsequently， statistics gathered on the CUSTOMERS table are stored as pending statistic"]
工伤职工的住院伙食补助费，不属于工伤保险基金中支付范围。
You have created a script in the recovery catalog called backup_database. Which of the following commands would successfully execute that script？（） [" run { open script backup_database； run script backup_database }"," run { engage script backup_database； }"," run { run script backup_database； }"," Run { execute script backup_database； }"," The name backup_database is an invalid name for an RMAN script. Trying to run it from RMAN would result in an error."]
Which of the following is a benefit of ASM fast disk resync?（） [" Failed disks are taken offline immediately but are not dropped."," Disk data is never lost."," By default, the failed disk is not dropped from the disk group ever, protecting you from loss of that disk."," The failed disk is automatically reformatted and then resynchronized to speed up the recovery process."," Hot spare disks are automatically configured and added to the disk group."]
使用超声波测厚仪时，在一点处用探头进行两次测厚，取（）值为被测工件厚度值。 ["A、较小 ","B、较大 ","C、最大 ","D、极限"]
以私营企业为例，简述新企业的创立程序。
