string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E9%A2%98%E5%BA%93%E5%A4%9A%E5%B0%91%E9%A2%98%E5%8F%8A%E6%A0%BC => Failed to connect to 101.91.112.32 port 38221: Connection refused"
二建题库多少题及格
