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Whether the fire extinguisher is in normal condition.Next, we are going to implement the Validator class, which is used here as Context and is responsible for receiving the user's request and delegating it to the strategy object, as follows:3. The origins of names are different.一本《少年许仙的奇幻漂流》，靠著一个无法解释的奇幻咒语，将一位自命风流花心的男子黄玉荣，带入一段世人皆知的民间故事白蛇传里……恋人张响、李杏花跟王晓宝一起投奔敌后武工队，成为狙击手。张响为报杀母之仇混入伪军，试图刺杀桥本。这让同时前来执行刺杀任务的李杏花与王晓宝误认为他已叛变。张响击毙桥本，欲重回武工队，却遭猜疑。他一气之下加入曾在日军大营意外救过他的国民党军，却不知道国共之间的摩擦日益频繁。对张响误会已深的李杏花决定嫁给王晓宝。婚礼上，她却抛下晓宝，跟武工队一起前去营救遭遇鬼子袭击的张响。日军趁机偷袭武工队驻地，国民党军却趁机偷袭日军县城，一场大混战上演。大战后，张响与李杏花重修旧好，并重回武工队，而王晓宝因妒成恨，决定利用日本人来对付张响。在王晓宝的协助下，日军在狙击战场上节节胜利，但在最后时刻，王晓宝良心复苏，用生命指引张响击毙了日军狙击手。Industrial Internet mainly brings about the following trend changes: First, intelligence, which uses big data to analyze the needs of different customer groups, carries out intelligent industrial production, and produces intelligent products that can carry information, sense environment and self-detection; The second is flexibility, which not only controls the production cost in the form of mass production, but also meets the needs of users in the form of personalized products. The third is greening. Industrial Internet provides a new path choice for the development of green economy, circular economy and intensive economy.