单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  The application contains the following code segment. Public Class CapabilityEvaluator  Public Shared Function ChkScreenSize（ _  ByVal cap As System.Web.Mobile.MobileCapabilities， _  ByVal arg As String） As Boolean  Dim screenSize As Integer = cap.ScreenCharactersWidth * _  cap.ScreenCharactersHeight  Return screenSize < Integer.Parse（arg）  End Function  End Class  You add the following device filter element to the Web.config file.  <filter name="FltrScreenSize"  type="MyWebApp.CapabilityEvaluator，MyWebApp" method="ChkScreenSize" />  You need to write a code segment to verify whether the size of the device display is less than 80 characters.  Which code segment should you use？（）

单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  The application contains the following code segment.  public class CapabilityEvaluator  {  public static bool ChkScreenSize（  System.Web.Mobile.MobileCapabilities cap，  String arg）  {  int screenSize = cap.ScreenCharactersWidth *  cap.ScreenCharactersHeight；  return screenSize < int.Parse（arg）；  }  | English | Chinese | Japan | Korean | - 76 - Test Information Co.， Ltd. All rights reserved.  }  You add the following device filter element to the Web.config file.  <filter name="FltrScreenSize"  type="MyWebApp.CapabilityEvaluator，MyWebApp"  method="ChkScreenSize" />  You need to write a code segment to verify whether the size of the device display is less than 80 characters.  Which code segment should you use？（）

单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You create an AJAX-enabled Web form by using the following code fragment.  When the updFirstPanel UpdatePanel control is updated， a dynamic client script is registered.  You write the following code segment in the code-behind file of the Web form. （Line numbers are included for reference only.）  01 Protected Sub Page_Load（ByVal sender As Object， _ ByVal e As EventArgs）  02 If Not IsPostBack Then  03 Dim generatedScript As String = _  | English | Chinese | Japan | Korean | - 75 - Test Information Co.， Ltd. All rights reserved. ScriptGenerator.GenerateScript（）  04  05 End If  06 End Sub  You need to ensure that the client-script code is registered only when an asynchronous postback is issued on the updFirstPanel UpdatePanel control.  Which code segment should you insert at line 04？（）