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So far, a simple file upload program has been written. Of course, this is still a counterexample. The disadvantage here is the same as the first code in the light example. The program is full of if and else conditional branches. The state and behavior are coupled in a huge method. It is difficult to modify and extend this state machine. This problem is exacerbated by the complexity of the links between file states这部新DC超级英雄剧讲述了一个高中女生的英雄路，由前DC首席创意官杰夫·琼斯主导制作，布瑞克·巴辛格主演。高中生Courtney Whitmore发现，自己的继父原来是美国正义协会成员“星侠”的助手“星条”，一次旧事后，星侠的星杖尘封在了继父家中。而本应已经无人能使用的星杖，在Courtney手中焕发了巨大威力……小鱼儿忙点头。Can't dig any more, just make a summary.When the coil is energized, the iron core attracts the armature and the support plate to move down, and the contact points are turned on or off instantly. The piston rod and the lever slowly decrease due to the influence of the blocking nylon. After a certain period of time, the piston rod decreases to a certain position, and the delayed action contact is pushed by the lever to act, which is in an open state, while the moving contact is closed. The delay time of the relay is the time when the coil is energized until the delay contact completes its action. When the coil is powered off, the relay is restored by the recovery action of the spring.以19世纪的英国为背景，讲的是一群小矮人乘船远行，结果遇上海难，被2个孩子发现，住在两个小孩的玩具房子里。一对中年坏姐弟想抓住这几个小人来帮他们演马戏来发财，小孩就保护他们不被抓到，还不能让自己家里大人发现。三个小人国的冒险家在海上航行失事，流落人间。两家照相馆在同一条街上竞争，发现三个小人的人有坏照相馆的老男人和他的老处女姐姐，以及收留三个小人的好照相馆的一对小兄妹。小兄妹的爷爷是一个很善良的人，经营有方，生意比坏照相馆好多了。