string(262) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E6%B0%B4%E5%88%A9%E7%9B%91%E7%90%86%E8%80%83%E8%AF%95%E7%AD%94%E6%A1%88%E8%A7%A3%E6%9E%90 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
2021水利监理考试答案解析
