A.其下部向里偏转，即做顺时针转动B.其下部向外偏转，即做逆时针转动C.不转动市场需求曲线是由各个单独厂商需求……

未分类题A．The Great Wall was completed in the Ming Dynasty.B．Not all the foreign tourists like the Great Wall.C．The first part of the Great Wall was built in 221 BC.D．The Qin Great Wall was protected well.

单项选择题生产要素的需求曲线之所以向右下方倾斜，是因为( )。 A．生产要素的产品的边际效用递减 B．要素的边际收益产量递减 C．要素参加的生产规模报酬递减 D．以上都不是

未分类题You are the administrator of a SQL Server 2000 database. Using the default options configures the database. You drop indexes to facilitate a large import of data, and rebuild them after the import is complete.Users report that response times from a stored procedure have become slower. In the stored procedure, you examine the following code.CREATE PROCEDURE GetCustomer( @CustomerID Int )ASSELECT FirstName, LastName, Address1, Address2, City,State, Zip, MAX(PurchaseDate) AS LastPurchaseFROM Customers CJOIN Addresses A ON A.AddressID = C.AddressIDJOIN Purchases P ON P.CustomerID = C.CustomerIDWHERE C.CustomerID = @CustomerIDGROUP BY FirstName, LastName, Address1, Address2, City, State, ZipYou want to improve the performance of the procedure by using the least amount of administrative effort. What should you do?A．Recompile the stored procedure.B．Update the database statistics.C．Check the consistency of the database and repair errors.D．Create a view and modify the stored procedure to use the view.

未分类题‍‍ 战国时期，各诸侯国相继变法，其中秦国商鞅变法最为彻底。下列属于商鞅变法内容的是‍‍ A.实行官吏俸禄制，严惩贪污 B.颁布均田令 C.宣布农奴获得人身自由 D.奖励耕战

单项选择题有A、B、C三种生产要素，其投入量的组合为(5，8，10)，产量为30。若现在改变其投入量，使其变成(6，8，10)，这时产量将达到32，则( )。 A．要素A的边际产品价值等于2 B．要素B的边际产品价值等于2 C．要素C的边际产品价值等于2 D．以上都不正确