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Memory, which can be divided into two types: one is called random, which is responsible for temporarily storing data waiting for CPU processing, and the data will be lost after power failure. It has no memory function. If the CPU is compared to the carriage of a train, RAM is the platform, and the people who go up and down the train are the data waiting to be processed and can only stay on the platform temporarily. The other is called read-only device, which can only read but not write, and its contents will not be lost after power failure. We will not introduce all the other equipment in the host computer here. In short, they all perform their respective duties to make the computer run normally, thus making the computer a good helper in our work and life.此剧讲述即使彼此非常相爱的男女主角，被人陷害后被迫分手并陷入困境之中，最终克服困难而复合的故事。剧中出演男主角John的托马斯·德克尔(Thomas Dekker)想必大家并不是很熟悉，不过看过美剧《超能英雄》(Heroes)的朋友应该了解，他就是在第一季中饰演拉拉队长克莱尔的同学，拿DV给克莱尔拍摄视频的那个男孩Zach。　　一望无垠的南极雪原上，水部落的卡塔拉（妮可娜·佩尔兹）和哥哥索卡（杰克逊·拉斯博恩）漫步而行。突然，天生异象、冰层爆裂，一个冰封的球形中竟“生”出了个12岁的神秘Although the local authorities have requirements, airlines will raise some thresholds on the local authorities' requirements to ensure their own recruitment quality. For example, some students will only accept the requirements if their English level reaches IELTS 5.5 or above. Similarly, the threshold for physical examination will also increase accordingly.