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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 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. Youreceive 

 English 
 Chinese 
 Japan 
 Korean 
 - 145 - Test Information Co.， Ltd. All rights reserved. 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？（）

可产生有害相互作用的联合用药是（） 硫酸新霉素与氢溴酸东莨菪碱联合治疗仔猪腹泻。 庆大霉素与呋塞米联合治疗泌尿系统感染。 阿托品与碘解磷定联合治疗有机磷中毒。 阿莫西林和克拉维酸联合治疗耐药大肠杆菌感染。 Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 (SP2). All client computers run Windows XP Service Pack 3 (SP3). You install and configure Microsoft Windows Server Update Services (WSUS) 3.0 on a member server named Server1. You create a new Group Policy Object named GPO1 that enables automatic updating. You link GPO1 to the domain. You need to ensure that each client computer obtains software updates from Server1. What should you do? （） On each client computer, run Gpupdate /Force.。 On each client computer, run wuauclt /detectnow.。 From GPO1, configure the Enable client-side targeting setting.。 From GPO1, configure the Specify intranet Microsoft update service location setting.。 具有探索倾向的人，适合下列哪些职业（）。 科研人员。 地质学者。 机械制图员。 法庭速记员。 ou are developing a chat forum for the Certkiller .com Web site. You are using ASP.NET 2.0 to develop the chat forum. You are developing a Web Form that allows a subscriber to alter enter their account details. The page contains the following code snippet. You need to programmatically hide the TextBox control based on other input. What should you do?（） Add a Runat="server" attribute to the TextBox control.。 Declare _Description as a TextBox in the code-behind class.。 Replace the <div> element with <table>, <tr>, and <td> elements.。 Replace the <div> element with a Panel server control.。 信息整合能力的提高能以哪三种途径影响竞争？（） 改变运作结构，从而改变竞争规则。 支持低成本以及差异化战略。 正确分析、判断信息的质量及其利用价值。 酝酿全新的业务。

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 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. Youreceive 

 English 
 Chinese 
 Japan 
 Korean 
 - 145 - Test Information Co.， Ltd. All rights reserved. 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？（）