题目内容
与家庭教育、社区教育相比，学校教育是必要的有益的补充。( )
查看答案
搜索结果不匹配？点我反馈
更多问题
在虚拟存储系统中，假设主存只有a，b，c三个页框，组成a进c出的FIFO队列进程，访问页面的序列是0，1，3，4，3，2，0，2，1，3，2号。若采用：(1)FIFO算法；(2)FIFO+LRU算法。用列表法求以上两种策略的命中率。
某卷烟厂用委托加工收。回的已税烟丝为原料连续生产卷烟，在计算纳税时，准予从应纳消费税税额中扣除委托加工收回的烟丝已纳消费税税款。( )
Many superstitious people are afraid of black cats. They believe that black cats have a strange power. If a black cat crosses their path, they think they will have bad luck.Black cats haven’t always had such a bad reputation. Long ago, the Egyptians thought that black cats were holy animals. They even worshipped them. Pasht was an Egyptian goddess who had a woman’s body and a cat’s head. Because the Egyptians had so much respect for black cats, they often buried the sacred creatures with great ceremony. Mummies of cats have often been found in ancient cemetery ruins. To keep the cats company after they died, mice were sometimes buried beside them.Feelings about black cats have always been strong. People have thought they were either very good or very bad. The people of Europe, in the Middle Ages, believed black cats were the evil friends of witches and the Devil. Witches were said to have the power to change themselves into black cats. People believed that you could not tell whether a black cat was just a cat, or whether it was a witch disguising herself as she plotted some evil scheme. The brain of a black cat was thought to be a main ingredient in witch’s brew.Unlike their ancestors of the Middle Ages, Englishmen today consider black cats to be good luck charms. Fishermen’s wives often keep a black cat around so that their husbands will be protected when they are out at sea. People of ancient Egypt and Europeans of the Middle Ages()
假设某计算机的存储系统由Cache和主存组成。某程序执行过程中访存1000次，其中访问Cache缺失(未命中)50次．则Cache的命中率是( )。
微信支付 
支付宝支付