string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E7%BB%8F%E6%B5%8E%E7%9C%9F%E9%A2%98%E8%AE%B2%E8%A7%A3 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
一建经济真题讲解
