string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=c1%E9%A9%BE%E7%85%A7%E5%92%8Cc2%E9%A9%BE%E7%85%A7%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 101.89.117.144 port 38076: Connection refused"
c1驾照和c2驾照的区别
