string(280) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA2020%E5%B9%B4%E6%9C%BA%E7%94%B5%E7%9C%9F%E9%A2%98%E7%AD%94%E6%A1%88%E4%B8%8E%E8%A7%A3%E6%9E%90 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
二建2020年机电真题答案与解析
