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单项选择题

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You write the following code segment to create a client-script function. (Line numbers are included for 
| English | Chinese | Japan | Korean | - 144 - Test Information Co., Ltd. All rights reserved. reference only.) 
01 function updateLabelControl(labelId, newText) { 
02 var label = $find(labelId); 
03 label.innerHTML = newText;
04 } 
The client script function uses ASP.NET AJAX and updates the text of any Label control in the Web form. 
When you test the client script function, you discover that the Label controls are not updated. You receive the following JavaScript error message in the browser: "’null’ is null or not an object." You need to resolve the error. 
What should you do?()

A.A
B.B
C.C
D.D

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单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You add the following code fragment to the Web.config file of the application (Line numbers are included  for reference only).  01 <healthMonitoring>  02 <providers>  03 <add name= EventLogProvider   04 type= System.Web.Management.EventLogWebEventProvider  05  >  06 <add name= WmiWebEventProvider   07 type= System.Web.Management.WmiWebEventProvider  08  >  09 < providers>  10 <eventMappings>  11  12 < eventMappings>  13 <rules>  14 <add name= Security Rule  eventName= Security Event   15 provider= WmiWebEventProvider   >  16 <add name= AppError Rule  eventName= AppError Event   17 provider= EventLogProvider   >  18 < rules>  19 < healthMonitoring>  You need to configure Web Events to meet the following requirements:  ¡¤Securit-related Web Events are mapped to Microsoft Windows Management Instrumentation (WMI) events.  ¡¤ Web Event s caused by pr obl e ms wit h confi gur ati on or appli cati on code ar el oggedi nt o t he Wi ndows  | English | Chinese | Japan | Korean | - 138 - Test Information Co., Ltd. All rights reserved. Application Event Log.  Which code fragment should you insert at line 11?()

A.A
B.B
C.C
D.D