string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%A4%E6%8E%A5%E7%8F%AD%E8%AF%95%E9%A2%98%E5%8F%8A%E7%AD%94%E6%A1%88%E9%80%89%E6%8B%A9%E9%A2%98 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
交接班试题及答案选择题
