string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E6%9C%BA%E7%94%B5%E4%B8%93%E4%B8%9A%E5%8E%86%E5%B9%B4%E7%9C%9F%E9%A2%98 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
一级建造师机电专业历年真题
