You work as a database administrator at Certkiller .com. In your production database， you observe that users’ transactions are consuming a lot of resource and you plan to impose resource restrictions by using Resource Manager. For which three resources can you enable usage restrictions by using Resource Manager？ （） CPU usage。 degree of parallelism。 number of open cursors。 number of sorts performed。 idle time for blocking sessions。 number of disk I/O operations performed。 number of memory I/O operations performed。
机电传动系统稳定工作时，如果TM=TL，电动机旋转方向与TM相同，转速将产生的变化是（）。 减速。 加速。 匀速。 停止。
You work as a database administrator for Certkiller .com. Users complain that their query is taking a long time to complete. You suspect the database buffer cache size to be the reason， and you define an alert to be generated when the buffer cache hit metric goes below 85%. When you observe the dynamic performance views， you find that the buffer cache hit ratio is 81% but no alerts are being generated. What could be the reason for this problem？（） The advisory memory has been turned off.。 The DB_CACHE_ADVICE parameter has been set to OFF in the parameter file.。 The STATISTICS_LEVEL parameter has been set to BASIC in the parameter file.。 The TIMED_STATISTICS parameter has been set to FALSE in the parameter file.。 The STATISTICS_LEVEL parameter has been set to TYPICAL in the parameter file.。
Given: What is the result？（） 1 2 3。 Compilation fails because of an error in line 12.。 Compilation fails because of an error in line 13.。 Compilation fails because of an error in line 14.。 A ClassCastException is thrown at runtime.。
广州公共汽车561路“柯子岭――车陂”，始末站为“柯子岭”和“车陂”，安排两个站长（基层调度员）分别负责这两个始末站的调度组织工作。设该线路17：00~18：00为高峰期，行车作业方案为高峰期单程运行时间40min，平峰期为35min。某天编号为001的车辆在线运行片段如下：第2车次在18：00从“车陂”开出，发车间距5分钟，车辆在18：35到达终点站“学校”站，运行是否正点？
You created a custom menu for the Order Entry application. Which step do you perform before attaching the menu module to the form module?（）
