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%E5%B7%A5%E7%A8%8B%E5%B8%88%E8%80%83%E8%AF%95%E6%8C%87%E5%8D%97 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
监理工程师考试指南
