早期的网络操作系统经历了由______结构向非对等结构的过渡。
参考答案:对等
解析: 早期的网络操作系统经历了由对等结构向非对等结构的过渡。
Food prices are climbing around the world because farmers can't ____ demand for grain.
A.catch up with
B.keep up with
C.grow out of
D.put up with
上报华东的自动化月报要求每个月前5个工作日上报。