string(312) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E5%B8%82%E6%94%BF%E5%9B%BE%E5%BD%A2%E6%A1%88%E4%BE%8B%E9%A2%98%E7%AD%94%E9%A2%98%E6%8A%80%E5%B7%A7%E4%B8%8E%E6%96%B9%E6%B3%95 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
二建市政图形案例题答题技巧与方法
