string(277) "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%E6%A1%88%E4%BE%8B6%E9%81%93%E5%A4%A7%E9%A2%98%E5%88%86%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
监理案例6道大题分别是什么
