Your database is running in ARCHIVELOG mode. The SCOTT.EMP table belongs to the DATA1 tablespace. The junior DBA erroneously runs a script that executes the following statement： SQL> DROP TABLE SCOTT.EMP PURGE； After one hour， you are performing the user managed incomplete recovery. Which datafiles will you restore from the last full backup？（） the datafiles associated with the SYSTEM tablespace。 the datafiles associated to the DATA1 tablespace。 the datafiles associated to the SYSTEM and DATA1 tablespaces。 all the datafiles in the database。
对于循环流化床锅炉，运行中应控制其含氧量在（）范围内。 3～5.5％。 6～8％。 ﹤2％。
You need to create a partitioned table to store historical data and you issued the following command： CREATE TABLE purchase_interval PARTITION BY RANGE （time_id） INTERVAL （NUMTOYMINTERVAL（1，’month’）） STORE IN （tbs1，tbs2，tbs3） （ PARTITION p1 VALUES LESS THAN（TO_DATE（’1-1-2005’， ’dd-mm-yyyy’））， PARTITION p2 VALUES LESS THAN（TO_DATE（’1-1- 2007’， ’dd-mm-yyyy’））） AS SELECT * FROM purchases WHERE time_id < TO_DATE（’1-1-2007’，’dd-mm-yyyy’）； What is the outcome of the above command？（） It returns an error because the range partitions P1 and P2 should be of the same range.。 It creates two range partitions （P1， P2）. Within each range partition， it creates monthwise subpartitions.。 It creates two range partitions of varying range. For data beyond ’1-1-2007，’ it creates partitions with a width of one month each.。 It returns an error because the number of tablespaces （TBS1，TBS2，TBS3）specified does not match the number of range partitions （P1，P2） specified.。
A company that makes Computer Assisted Design (CAD) software has, within its application, some utility classes that are used to perform 3D rendering tasks. The company's chief scientist has just improved the performance of one of the utility classes' key rendering algorithms, and has assigned a programmer to replace the old algorithm with the new algorithm. When the programmer begins researching the utility classes, she is happy to discover that the algorithm to be replaced exists in only one class. The programmer reviews that class's API, and replaces the old algorithm with the new algorithm, being careful that her changes adhere strictly to the class's API. Once testing has begun, the programmer discovers that other classes that use the class she changed are no longer working properly. What design flaw is most likely the cause of these new bugs?（） Inheritance。 Tight coupling。 Low cohesion。 High cohesion。 Loose coupling。 Object immutability。
商品价值由（）为代表形成了不同的学派和理论体系。 生产费用价值理论。 效用价值理论。 经济基础理论。 新古典经济学价值理论。 劳动价值论。
You are performing an incomplete recovery because a tablespace is dropped and purged from the Recycle Bin. In which mode will you execute the following code？（）
RMAN>RUN {
SET UNTIL SEQUENCE THREAD ；
RESTORE DATABASE；
RECOVER DATABASE；
}
