You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains a ListBox control named lbxItems that is data-bound to a collection of objects. Each object has a DisplayValue property. You add a Button control to the application. You need to ensure that the Content property of the Button control is data-bound to the DisplayValue property of the selected item of lbxItems. Which binding expression should you use?（） [" { Binding ElementName=lbxItems, Source=SelectedItem, Path=DisplayValue }"," { Binding Source=lbxItems, ElementName=SelectedItem, Path=DisplayValue }"," { Binding ElementName=lbxItems, Path=SelectedItem.DisplayValue }"," { Binding Source=lbxItems, Path=SelectedItem.DisplayValue }"]
你发现SQL Server 2005数据库中sales表的所有索引的碎片都很严重。现在，你要将sales表全部索引的碎片减到最小，同时却不影响任何用户使用sales表。该怎样做？（） ["对包含销售表的磁盘进行碎片整理","执行以下语句：USE master； GO DBCC CLEAN TABLE （‘DB1’.’sales’）；GO","执行以下语句：USE DB1；GO ALTER INDEX ALL ON sales REORGANIZE WITH LOB_COMPACTION=ON）；GO","执行以下语句：USE DB1；GO ALTER INDEX ALL ON sales REBUILD；GO"]
创建索引的命令关键字为（），删除索引的命令关键字为（）。
理论创新的类型与形式有（） ["新的材料","新的方法","新的视角","新的组合"]
在Photoshop中，（）滤镜可以使图像中过于清晰或对比度过于强烈的区域，产生模糊效果，也可用于制作柔和阴影。 ["渲染","画笔描边","模糊","风格化"]
糖皮质激素的药物有哪些药理作用，常用有哪些？（举3－4种药物名称）
