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The difference between them is that each policy class in the policy mode is equal and parallel, and there is no connection between them. Therefore, customers must be familiar with the functions of these policy classes so that customers can actively switch algorithms at any time. However, in the state mode, the behavior corresponding to the state and the state has long been encapsulated, and the switching between states has long been stipulated to be completed. The "change of behavior" occurs within the state mode. For customers, they do not need to know these details. This is what state patterns doThe following demo is what I saw in the book, but it doesn't matter. We just understand the use of the strategy model. We can use the strategy model to calculate the bonus.故事聚焦于一个在自己精神世界中挣扎的、孤独的女人身上。简在婚礼仪式上被未婚夫抛弃后，20年来饱受精神分裂的折磨，在混乱的精神状况下，她的情感关系（无论是真实的还是想象的）和家庭关系矛盾重重。在医院看病的一天，简遇见了迈克——一个失败的、迷失的音乐家。两人开始了一段黑色喜剧性的浪漫故事，在这之中，情况发生了变化。佑廷与Kelly决定重新挑选一颗属于他们的婚戒，仲贤推荐了一枚符合Kelly气质的戒子，没想到售价居然高达96万，为了弥补Kelly的佑廷竟一口答应，但存款只有16万的他要如何买下戒指呢？单身的仲贤又为什么会对婚戒有所研究？杰克与Kelly摊牌，Kelly会如何与杰克正面对峙？I. Dangerous Sports Business Activities他们在金钱的罪恶里阴险的生活着，为达到目的，不择手段。The term "fire protection technical service practitioners" as mentioned in these Provisions, It refers to the professional and technical personnel who have obtained the qualification of registered fire engineers in accordance with the law and practiced in the fire technical service institutions, as well as the general operators who have obtained the professional qualification of the corresponding special types of work in the fire industry in accordance with the relevant provisions and are engaged in the maintenance and testing of fire facilities in the fire technical service institutions.