string(253) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E5%8C%97%E4%BA%AC%E4%BA%8C%E5%BB%BA%E5%AE%9E%E5%8A%A1%E8%AF%95%E9%A2%98 => Failed to connect to 101.89.117.144 port 38005: Connection refused"
2021年北京二建实务试题
