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Generally speaking, a delegate is a class that maintains a field inside and points to a method. Events can be regarded as variables of one delegate type, and multiple delegates or methods are cancelled through event registration. This article uses delegate and event execution methods to understand the difference between the two.BOT is the abbreviation of Build-Operate-Transfer, which is usually literally translated as "Build-Operate-Transfer". BOT is essentially a way to invest, build and operate infrastructure. On the premise of reaching an agreement between the government and private institutions, the government issues a concession to private institutions to allow them to raise funds to build a certain infrastructure and manage and operate the facility and its corresponding products and services within a certain period of time. The Government may limit the quantity and price of public goods or services provided by the Agency, but ensure that private capital has the opportunity to make profits. The risks in the whole process are shared by the Government and private institutions. When the concession period ends, the private organization will transfer the facility to the government department as agreed, and the facility will be operated and managed by the government designated department. Therefore, the word BOT is paraphrased as "infrastructure concession.拐了他去卖的，是以整日骂人，张嘴就是我日你祖宗什么的……郑氏心儿当即漏跳一拍，几乎不曾站起来。这与他知道的，长期以来坚信的事实全然不一样。For example, if a crazy battle uses 450 to attack 17 and 455 to attack 12, the latter will definitely have a higher attack.十几年前拍摄的《铁血丹心》电视剧，就取得了巨大的成功。　　为此，总部崔志国局长和反间谍专家许子风，共同制定了一个绝密计划，在严防死守的同时，利用台湾101和102两个机关长期存在的矛盾，用假情报从内部瓦解敌人，彻底瘫痪这两个机关的特务活动。作为这个计划的重要部分，我驻香港反间谍人员朱学峰故意露出破绽，落入101香港情报站站长罗三畏的手中。