简述1942年前后解放区文学的变化。
地基基础工程中常见的质量通病有（）。 ["A.地基不均匀沉降 ","B.预应力砼管桩桩身断裂 ","C.挖方边坡塌方 ","D.基坑（槽）回填土沉陷"]
Exhibit： Using Database Control， you have scheduled a job to shrink the TRANStable residing on the TTtablespace. The job would run at 5：00 p.m. every Friday.When you examine the space usage of the table after the completion of the job， you find that the table has not been shrunk. What could have been the reason for this？（） [" The tablespace that contains the TRANS table is online."," The tablespace that contains the TRANS table is permanent."," The tablespace that contains the TRANS table is locally managed."," The segment space management of the tablespace that contains the TRANS table is manual in nature."]
论述防止汽蚀现象的措施。
Your database supports an online transaction processing (OLTP) application. The application is undergoing some major schema changes, such as addition of new indexes and materialized views. You want to check the impact of these changes on workload performance. What should you use to achieve this?（） [" Database replay"," SQL Tuning Advisor"," SQL Access Advisor"," SQL Performance Analyzer"," Automatic Workload Repository compare report"]
简述香港特别行政区律政司司长的身份。
