string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%81%94%E6%83%B3b50-45%E8%BF%9B%E5%85%A5bios%E6%A8%A1%E5%BC%8F => Failed to connect to 101.89.117.144 port 38022: Connection refused"
联想b50-45进入bios模式
