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."]
男性，50岁。车祸致双下肢广泛软组织挫伤。人院查体：心率106/min，血压105/75mmHg，急行手术清创。术后第2天患者尿量减少至25ml/h以下，经补液后不见好转，为进一步明确诊断，下列哪一项检查最有价值（） ["X线拍片","血尿素氮、肌酐检查","血生化检查","动脉血气分析","尿常规及细菌培养"]
You are enabling the Automatic Shared Memory Management feature in the Oracle Database 10g to ensure that the important memory structures of the System Global Area （SGA） are automatically adjusted depending on the database workload. You are using Enterprise Manager 10g to enable this feature. You are currently on the Administration tab page. Which two links should you click to go to the Memory Advisor page？（） [" Advisor Central"," Global Attributes"," Resource Monitors"," Memory Parameters"," Database Usage Statistics"," All Initialization Parameters"," Automatic Workload Repository"]
What is necessary for your query on an existing view to execute successfully? （） [" The underlying tables must have data."," You need SELECT privileges on the view."," The underlying tables must be in the same schema."," You need SELECT privileges only on the underlying tables."]
某住宅小区工程，混凝土现场搅拌，采用反转出料搅拌机。钢筋现场加工，采用慢速卷扬机对钢筋进行冷拉作业。工期为2011年3月28日～2013年4月1日。
施工过程中发生了如下事件：
事件一：钢筋加工前，项目部组织对钢筋加工机械及钢筋冷拉场地进行检查与验收。发现钢筋加工机械的装置没有做到齐全有效；钢筋冷拉场地设置没有达到设计要求。要求班组整改。
事件二：总监理工程师巡检中发现施工操作人员工类手持电动工具使用存在不当行为后。立即下发了监理通知，要求项目部整改。事件二中，I类手持电动工具使用的规定有哪些？必须采用Ⅱ类工具的场所有哪些？
