string(304) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%B8%AD%E7%BA%A7%E5%AE%89%E5%85%A8%E5%B7%A5%E7%A8%8B%E5%B8%88%E5%BB%BA%E7%AD%91%E5%AE%9E%E5%8A%A1%E8%80%83%E8%AF%95%E7%AD%94%E6%A1%88 => Failed to connect to 14.18.46.51 port 38206: Connection refused"
2020中级安全工程师建筑实务考试答案
