How many different calendars does Oracle 11g support？（） 22。 7。 6。 15。 2。
肥料成分和施肥量：
Identify the two direct sources from where SQL plans can be loaded into the SQL plan baselines.（） Cursor cache。 Stored outline。 SQL Tuning Set。 Automatic Workload Repository (AWR) snapshot。
无形资产更新周期主要根据（）来判断。 产品更新周期。 经济周期。 技术更新周期。 政府政策。
Initially， for the Automatic Workload Repository （AWR） statistics，the retention period is set to 7 days， the collection interval is set to 30 minutes and the collection level is set to Typical in your production database. You have been using the Memory Advisor for the last three months to generate recommendations for tuning memory components. However，when you observe the Memory Advisor on a Friday，you find that the statistics are available only for two days， Thursday and Friday，of that week. What would have caused the statistics to be removed？（） On Wednesday， the statistics have been purged.。 On Wednesday， the retention period has been set to zero.。 On Wednesday， the collection interval has been set to zero.。 On Wednesday， the collection level has been changed to All.。 On Wednesday， the retention period has been set to one day.。 On Wednesday， the retention period has been set to two days。 On Wednesday, the collection level has been changed to Typical.。 On Wednesday, the collection interval has been set to 1440 minutes.。
（）授权监理单位按照合向的安全工作内容监督检查承包人安全工作的实施，组织施工单位和有关单位进行安全检查。
