string(341) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=21%E5%B9%B4%E7%9B%91%E7%90%86%E5%B7%A5%E7%A8%8B%E5%B8%88%E6%95%99%E6%9D%90%E6%9C%89%E5%8F%98%E5%8C%96%E5%90%97%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E4%B9%88%E4%B8%A5%E6%A0%BC => Failed to connect to 125.88.227.171 port 38114: Connection refused"
21年监理工程师教材有变化吗为什么这么严格
