string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%91%E7%90%86%E6%A6%82%E8%AE%BA%E8%80%83%E8%AF%95%E5%8D%95%E9%80%89 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
监理概论考试单选
