臭氧主要集中在平流层及其以上的大气层中,它可以吸收太阳辐射中的紫外线。()
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坚持全面协调可持续发展,就要统筹安排和处理好()的关系等经济发展重大问题。
A. 消费和供给
B. 发展的速度和结构、质量、效益
C. 市场机制和计划手段
D. 国内经济发展与国际金融市场疲软
项目评估必须真实、全面、客观地反映项目的全貌,这体现了项目评估的()原则。
A. 客观公正
B. 综合评价,比较择优
C. 定性分析和定量分析相结合
D. 可比性
根据规范法律关系的法律部门不同。物业管理法律关系可分为民事法律关系,(),(),刑事法律关系四大类。
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?()
A. Execute the query and view Active Session History (ASH) for information about the query.
B. Enable SQL trace for the query.
Create a database operation, execute the query, and use the DBMS_SQL_MONITOREPORT_SQL_MONITOR function to view the report.
D. Use the DBMS_APPLICATION_INFSET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.