string(284) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%85%AC%E8%B7%AF%E4%BA%8C%E5%BB%BA%E5%AE%9E%E7%89%A9%E6%A1%88%E4%BE%8B%E9%A2%98%E7%9C%9F%E9%A2%98%E8%AE%B2%E8%A7%A3 => Failed to connect to 101.91.112.32 port 38162: Connection refused"
公路二建实物案例题真题讲解
