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The world is very complicated, full of phenomena, facts and various viewpoints (insights, lies and deception). We need to extract the consistency behind them in order to quickly understand and understand the world. This consistency is the dimension in the classification. The classification of the three worlds is just to find a classification method for countries that we have not used before. The traditional classification of countries is based on geographical location (five continents), population (large and small countries) and development stage, while the three worlds are classified according to their relationship.For the first point, we also often use it in our daily work, such as our Ajax request, which has a success and error callback function, and we can subscribe to Ajax success and error events. We don't care about the state of the object running asynchronously, we only care about success or error when we have to do something of our own ~出身普通的学霸张静美毕业后，一边面临着择业压力，一边稀里糊涂与霸道不羁的豪门少爷龙一领证结婚，过上了羡煞旁人“王子与公主的幸福生活”。然而，豪门生活和职场之路却没有想象中顺遂，现实的考验接二连三抛给这对新婚燕尔的小夫妻。当豪门少爷远离校园的象牙塔，开始踏进社会，与张静美共同迎接全新的考验时，一个接一个的难题都将等着他们去解答。Delete Event Add Event真是见鬼了。"I remember we had a very clear division of tactics at that time, First, adjust all the automatic rifles in hand to semi-automatic shooting mode, Of the 15 men, apart from the gunners and the bazookas, Most of the others use '81 bars', There are also a small number of 63 types, I'm using the 63, One of the characteristics of this gun and the 81-bar is that the single shot accuracy is especially good, Even better than '56 and a half', Much better than 56 Chong and some Mao Zi guns captured from the Vietnamese, At that time, in order to give full play to this advantage in precision, The company commander ordered us to use this tactic, The concrete implementation is to use heavy machine guns to suppress fire in hidden places, In addition to killing as many enemies as possible, If the enemy takes tactical actions such as lying down to avoid shooting, Then use machine gun fire to limit its movement range, That is to say, they are suppressed in situ, and then rifles are used to give full play to the advantage of high semi-automatic shooting accuracy, giving them "roll call" one shot at a time. This tactic is still very effective in dealing with the first and second large-scale attacks, with extremely high efficiency, and almost all the Vietnamese troops who came up were killed on the way to attack.1. Access your mind map anytime and anywhere