string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B0%B4%E5%88%A9%E7%9B%91%E7%90%86%E8%80%83%E8%AF%95%E7%AD%94%E6%A1%88%E5%9C%A8%E5%93%AA%E9%87%8C%E6%89%BE => Failed to connect to 61.171.74.35 port 38041: Connection refused"
水利监理考试答案在哪里找
