[单选]

You installed Oracle Database 11g and are performing a manual upgrade of the Oracle9i database. As a part of the upgrade process，you execute the following script：  
SQL>@utlu111i.sql  
Which statement about the execution of this script is true？（）

Which type of backup contains only the blocks that have changed since the last level 0 incremental backup?（） a cumulative level 1 backup。 a differential level 1 backup。 a full backup。 a whole backu。 园林用水类型 在企业的利润分配环节怎样合理节税？ Which three statements about subqueries are true?（） A single row subquery can retrieve only one column and one row.。 A single row subquery can retrieve only one row but many columns.。 A multiple row subquery can retrieve multiple rows and multiple columns.。 A multiple row subquery can be compared by using the ">" operator.。 A single row subquery can use the IN operator.。 A multiple row subquery can use the "=" operator.。 监理机构应在收到争议通知后，在（）天内进行合同争端调解工作。 70。 84。 98。 112。

You installed Oracle Database 11g and are performing a manual upgrade of the Oracle9i database. As a part of the upgrade process，you execute the following script：  
SQL>@utlu111i.sql  
Which statement about the execution of this script is true？（）