string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%86%8C%E6%B6%88%E9%98%B2%E5%B7%A5%E7%A8%8B%E5%B8%88%E8%80%83%E8%AF%952020%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
注册消防工程师考试2020答案
