string(283) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BB%BA%E8%AE%BE%E6%B3%95%E8%A7%84%E8%80%83%E8%AF%95%E9%A2%98%E5%BA%93%E6%9C%89%E5%A4%9A%E5%B0%91%E9%A2%98%E5%95%8A => Failed to connect to 14.18.117.71 port 38164: Connection refused"
建设法规考试题库有多少题啊
