You work as a database administrator for Certkiller .com. You want to be notified when the number of disk I/O increases by 10% of what it was yesterday. You create a baseline metric for yesterday’s disk I/O performance. How do you use the baseline metrics to achieve your objective？（） Save the baseline in the database。 Save the baseline in the Database Control Home Page。 Create a procedure to read and apply the baseline to disk I/O metrics。 Apply the baseline to the disk I/O metrics in the Mange Metrics page。 Alter the disk I/O metrics to include baseline by using the ALTER METRICScommnd。
消费者认为产品的实际效用未必抵得上消费者所支付价格的风险是（） 功能风险。 安全风险。 经济风险。 社会风险。
What is the result？（） null。 zero。 some。 Compilation fails.。 An exception is thrown at runtime.。
You executed the following command in Recovery Manager （RMAN） against your Oracle 10g database：RMAN> REPORT NEED BACKUP days 3；What would be the output of this command？（） a list of files that require a backup within three days。 a list of files that have not been backed up for three days。 a list of files that RMAN recommends be backed up only once in every three days， based on low volatility。 a list of files for which a backup has already been performed and may need a backup after three day。
根据施蒂格勒1957年发表的《地方政府职能的有理范围》，为了实现资源配置的有效和收入分配的公平，决策应在（）行政水平的政府部门进行。 较低。 较高。 中等。 最高。
20世纪60年代以来，心理学家关于儿童游戏的智力发展作用的实证研究表明，游戏与以下哪些因素存在着相关？（）
