string(320) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E5%BB%BA%E8%AE%BE%E5%B7%A5%E7%A8%8B%E6%B3%95%E8%A7%84%E5%8F%8A%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86%E8%80%83%E8%AF%95%E9%87%8D%E7%82%B9 => Failed to connect to 101.91.112.32 port 38162: Connection refused"
二建建设工程法规及相关知识考试重点
