压疮炎性浸润期处理方法，正确的是（）。

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？（）

A.

B.

C.

D.

A．A

B．B

C．C

D．D

A．A

B．B

C．C

D．D

puter to Microsoft Windows Vista. You must achieve this goal without reinstalling the applications.What should you do？（）

A.A

B.B

C.C

D.D

you install Microsoft Windows XP Professional on the second partition of the same machine.You are able to log on to Windows XP Professional but do not have the option to boot to Windows Vista.You need to be able to dual boot the computer.What should you do？（）

A.A

B.B

C.C

D.D

P Professional. Employees that use Windows XP Professional do not appear in the Invite people list of a Microsoft Windows Meeting Space meeting. You need to ensure that all employees are invited to Windows Meeting Space meetings.Which two actions should you perform？（）

A.A

B.B

C.C

D.D

E.E

You perform an in-place upgrade on a Microsoft Windows XP Service Pack 2 (SP2) computer to Windows Vista.After the upgrade, you attempt to run a custom application. You receive the following error message: This application is only designed to run on Windows XP or later.”You need to run the application on Windows Vista.What should you do？（）

A.A

B.B

C.C

D.D

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application that displays an image.You need to ensure that users can stretch and scale the image.Which control should you use？（）

A.Frame

B.Slider

C.Viewbox

D.ScrollViewer

A．A

B．B

C．C

D．D