【简答题】CPU执行一段程序时,cache完成存取的次数为1900次,主存完成存取的次数为100次,已知cache存取周期为50ns,主存存取周期为250ns,求cache/主存系统的效率和平均访问时间。
【判断题】In terms of PDI, scores close to 0 stand for a larger power distance, and scores close to 100 stand for a smaller power distance.
【判断题】In terms of PDI, scores close to 0 stand for a larger power distance, and scores close to 100 stand for a smaller power distance.
【单选题】为了标识一个 HTML 文件开始应该使用的 HTML 标记是 ( ) 。