string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%AE%89%E5%85%A8%E6%B6%88%E9%98%B2%E5%9F%B9%E8%AE%AD%E8%80%83%E8%AF%95%E9%A2%98%E7%AD%94%E6%A1%88 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
2021安全消防培训考试题答案
