使用（）可以将图片放入图像中的一个新图层内 “置入”命令。 “导入”命令。 “输入”命令。 “导出”命令。
实际工作中的“一刀切”的错误是由于忽视了事物（）。 矛盾的同一性。 矛盾的普遍性。 矛盾的特殊性。 矛盾的斗争性。
You are planning to import customer data from the Customer table and the Country table in your SQL Server 2000 database into a SQL Server 2005 database. You want to ensure that during the import process，each value in the CountryCode column of the Customer table has a corresponding record in the CountryCode column in the Country table of the SQL Server 2005 database. You define a foreign key between these two tables. Thus，referential integrity will guarantee that the import routine fails if there are any records where a CountryCode value does not exist in the Country table but does exist in the Customer table. You need to ensure that the import process does not fail if records are encountered that do not exist in the Country table. What should you do？（） Drop the foreign key. Import the data by using the script. Re-create the foreign key.。 Create a CHECK constraint.。 Create a DML INSTEAD OF trigger that writes the failed records to a file or table.。 Create a DML AFTER trigger that writes the failed records to a file or table.。
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment. You create an event handler named StackPanel_PreviewTextInput. You also have a collection of strings named Keywords. You need to ensure that TxtBoxA and TxtBoxB do not contain any of the strings in the Keywords collections. Which code segment should you use?（）
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兼相爱，交相利
在利用计算机进行数据处理的四个发展阶段中，第二个发展阶段是（）。
