中小学教师专业标准上有哪些差别？
自选游戏也称作（） 目的性游戏。 教学游戏。 手段性游戏。 娱乐游戏。
电感线圈的电压（）。 超前电流90°。 滞后电流90°。 滞后电流小于90°。
Examine the data from the EMP table: The COMMISSION column shows the monthly commission earned by the employee.Which three tasks would require subqueries or joins in order to perform in a single step?（） Deleting the records of employees who do not earn commission.。 Increasing the commission of employee 3 by the average commission earned in department 20.。 Finding the number of employees who do NOT earn commission and are working for department 20.。 Inserting into the table a new employee 10 who works for department 20 and earns a commission that is equal to the commission earned by employee 3.。 Creating a table called COMMISSION that has the same structure and data as the columns EMP_ID and COMMISSIONS of the EMP table.。 Decreasing the commission by 150 for the employees who are working in department 30 and earning a commission of more then 800.。
下列类型中，不包括在消费者类型中的有（） 耐心购买者。 分析购买者。 冲动购买者。 兴趣购买者。
Oracle Coherence is best classified as （）?
