string(312) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E5%85%AC%E8%B7%AF%E5%AE%9E%E5%8A%A1%E6%A1%88%E4%BE%8B%E9%A2%98%E8%80%83%E8%AF%95%E6%8A%80%E5%B7%A7 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
二级建造师公路实务案例题考试技巧
