string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%91%E7%90%86%E8%80%83%E8%AF%95%E6%A1%88%E4%BE%8B%E5%87%A0%E9%81%93%E9%A2%98 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
监理考试案例几道题
