string(314) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2024%E5%B9%B4%E4%BA%8C%E5%BB%BA%E6%95%99%E6%9D%90%E6%94%B9%E5%8A%A8%E5%A4%A7%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 14.18.117.71 port 38220: Connection refused"
2024年二建教材改动大吗为什么这么严格
