隋唐时期实行三省六部制，下列关于该制度的评述正确的是（）。①分散相权以加强皇权②形成严密的封建官僚机构③有利于减少中央政令的失误④三省六部一直被后世历朝沿袭 ["①②③","②③④","①②④","①③④"]
创建派生类时，可以通过NotInheritable创建不能作为基类的类。
Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT What is true about the set?（） ["The DESCRIBE DEPT statement displays the structure of the DEPT table.","The ROLLBACK statement frees the storage space occupied by the DEPT table.","The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.","The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement."]
甲为投身恐怖主义活动而参加了某国际恐怖主义组织，法院认定甲构成参加恐怖组织罪。甲的行为属于（） ["预备犯","实行犯","帮助犯","未遂犯"]
A new report process containing a complex query is written, with high impact on the database. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests. For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING. What should you do to accomplish this task?（） [" Execute the query and view Active Session History (ASH) for information about the query."," Enable SQL trace for the query."," Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report."," Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view."]
简述电子签名与传统签名的功能比较。
