string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%AF%95%E9%AA%8C%E6%A3%80%E6%B5%8B%E5%B8%88%E8%80%83%E8%AF%95%E6%97%B6%E9%97%B4%E6%94%B9%E4%BA%86%E5%90%97 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
试验检测师考试时间改了吗
