string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%B3%95%E8%A7%84%E5%90%AC%E8%B0%81%E7%9A%84%E8%AF%BE%E5%A5%BD => Failed to connect to 14.18.117.71 port 38220: Connection refused"
一建法规听谁的课好
