Your database operates in ARCHIVELOG mode. User/x7fmanaged consistent backups are performed every Sunday night. On Tuesday， client A drops a table at 8：00 a.m. as follows： SQL> DROP TABLE cust_ord PURGE; Table dropped. Client B executes a query at 9：00 a.m. on the same table as follows： SQL> SELECT * FROM cust_ord; SELECT * FROM cust_ord * ERROR at line 1： ORA/x7f00942： table or view does not exist Client B needs the dropped table and reports the problem to you. With reference to this scenario， which action should you take？（）
A、retrieve the table by using the flashback feature
B、restore all the data files from last Sunday’s backup， and then perform a timebased recovery
C、restore all the data files from last Sunday’s backup， and then perform a log sequence recovery
D、restore all the data files from last Sunday’s backup， and then perform a cancelbased recovery
E、restore from last Sunday’s backup only data files that belong to the tablespace in which the table was stored， and then perform a complete recovery
下列关于中期财务报告，说法不正确的是（ ）。
A、上年度中期编报合并财务报表的企业，其中期财务报告中也应当编制合并财务报表
B、中期财务报告中各会计要素的确认和计量原则应当与年度财务报表所采用的原则相-致
C、中期财务报告附注应当以年初至本中期末为基础披露
D、在编制中期财务报告时，中期会计计量应当以年度为基础
调整心态的“三把钥匙”的第二把是（）。
A、合作交流
B、进行政治和经济教育
C、以连为家——优化环境
D、经常性的思想教育
下列（）资料属于给水管道工程竣工验收应提供的资料。
A、竣工图及设计变更文件
B、管道的位置及高程测量记录
C、管道的水压试验记录
D、回填土压实度检验记录
E、管道冲洗及消毒记录
开立单位资信证明无须填写《单位银行账户业务约定/变更申请书》。（）
A、对
B、错
使用向导创建演示文稿时，可以随时单击【上一步】按钮返回到前面的对话框修改相应的设置。
A、对
B、错