<p> 仔细研究下面的代码片段，回答下面的问题：<br/> var http = require('http');<br/> var server = http.createServer(function (request1, result1) {<br/> console.log('This is request Header');<br/> console.log(request1.headers);<br/> result1.write('Working with HTTP');<br/> result1.end();<br/> }).listen(3000);<br/> console.log('This is a sample');<br/> 当客户端发出请求时，网络浏览器会获得以下哪种输出结果？( )</p>
<p><br/> Working with HTTP</p>
<p><br/> This is request Header</p>
<p><br/> This is a sample<br/> This is request Header</p>
<p><br/> This is request Header<br/> Working with HTTP</p>
<p> <br/> This is a sample</p>
<p> <br/> No output is displayed due to an error in the program.</p>
