string(289) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2024%E6%B3%A8%E5%86%8C%E5%AE%89%E5%85%A8%E5%B7%A5%E7%A8%8B%E5%B8%88%E6%95%99%E6%9D%90%E5%8F%98%E5%8A%A8%E4%BA%86%E5%90%97 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
2024注册安全工程师教材变动了吗
