document.write('<div class="contentBox">');
document.write('<img src="http://uphotos.eepw.com.cn/1727067005/thumb/avatar.jpg" width="50" height="50" />');
document.write('<div>');
document.write('<div class="nameTime">');
document.write('<a href="//www.cghlg.com/passport/u/一句话">一句话</a> · 2024-09-24 13:59:20');
document.write('</div>');
document.write('<p>');
document.write('请问SNR和直流增益的关系曲线是如何得到的');
document.write('</p>');
document.write('</div>');
document.write('</div>');