string(319) "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%E4%B8%8B%E8%BD%BD%E6%95%99%E6%9D%90%E9%9C%80%E8%A6%81%E5%A4%9A%E4%B9%85%E6%89%8D%E8%83%BD%E4%B8%8B%E6%9D%A5 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
一级建造师下载教材需要多久才能下来
