教学生识字有很多技巧,有一位教师告诉学生如何区别“买卖”两个字时说:“多了就卖,少了就买。”学生很快记住了这两个字。还有的学生把“干燥”写成“干躁”,把“急躁”写成“急燥”,老师就教学生记住:“干燥防失火,急躁必跺足。”从此以后,学生对这两个字再也不混淆了。该教师的教法是依据了教育心理学中()。 托尔曼符号学习理论。 布鲁纳的发现学习理论。 奥苏泊尔的有意义学习。 加涅的信息加工学习理论。
The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings, workload profile,and statistics to diagnose the possible causes of the performance degradation?() by using the SQL access advisor。 by using the Automatic Workload Repository report。 by running the Automatic Database Diagnostic Monitor (ADDM)。 by using the Automatic Workload Repository Compare Period report。 by analyzing the output of the V$ACTIVE_SESSION_HISTORY view。
安全限值即卫生标准,下列可用于描述安全限值的有()。 每日允许摄入量。 最高容许浓度。 阈限值。 参考剂量。
贝克-米勒粉红
Your database is using shared server configuration. Which optional memory structure would you configure to store the User Global Area (UGA) information and improve the shared pool performance?() large pool。 streams pool。 keep buffer cache。 recycle buffer cache。
因子V,Ⅷ主要含于下列哪种血液成分中()