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Set up the location, system form, name and contact number of the maintenance unit; Type, model, quantity and manufacturer of controller (including fire alarm, fire linkage, combustible gas alarm, electrical fire monitoring, etc.), detector (including fire detection, combustible gas detection, electrical fire detection, etc.), manual alarm button, fire electrical control device, etc.; Diagram of automatic fire alarm system.天启才是华夏，乃至世界，最好的作家。Leonard和Sheldon是一对室友，他们共同的好友Howard 和Rajesh跟他们一样，是任职于同一所大学的天才科学家，他们都是不折不扣的Geek——智商超群，情商奇低；热爱电玩与漫画，不善与人交流，更不用说与异性相处；他们凡事用科学解决，因此引发不少笑话。美女邻居Penny的出现，让他们的生活产生了全新的变化。宅男科学家与美女侍应生的碰撞，有了奇妙的化学反应。暗恋Penny已久的Leonard终于获得了与她约会的机会，Howard、Raj和Sheldon帮助他科学分析约会成绩。在科学家们的精确计算下，Leonard能否抱得美人归？就在范亚父和项羽观星之时，崤山以东的某处平原城池中，一个少女穿着厚厚的冬衣和皮质披风，站在院落里，观察着天空的闪烁的星辰。But how?　　武汉空袭、重庆空袭，刘长岭和高云天用不屈的斗志迎接日本咄咄逼人的攻势，在空战中高云天失去了一条腿，刘长岭Explain that in the OrderPizza method, we do a lot of things, including calling the CreatePizza method to generate a desired pizza, and then doing a series of operations on the pizza. The key point is that Pizza is defined as an abstract class, which means that in the OrderPizza method we don't care what type this Pizza is at runtime, in other words, this is decoupling. The coupling between PizzaStore and Pizza is uncoupled.