string(257) "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%E6%95%99%E6%9D%902023%E5%92%8C2024%E6%94%B9%E5%8A%A8%E5%A4%A7%E5%90%97 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
二建教材2023和2024改动大吗
