string(310) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E7%BA%A7%E4%BC%9A%E8%AE%A1%E5%89%8D%E9%9D%A2%E7%9A%84%E9%A2%98%E5%BE%97%E5%A4%9A%E5%B0%91%E5%88%86%E5%8F%AF%E4%BB%A5%E8%BF%87%E5%85%B3 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
中级会计前面的题得多少分可以过关
