string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B6%88%E9%98%B2%E5%B7%A5%E7%A8%8B%E5%B8%882020%E5%B9%B4%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
消防工程师2020年答案
