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At that time, it was quite confusing to see this bibliography. Mathematics was recommended from high school mathematics to mathematics analysis for mathematics majors. As soon as the computer algorithm class came up, it recommended the big "Introduction to Algorithms" and the theoretical "Data Mining: Concepts and Technologies". It was not suitable for such beginners. Reading should be ladder-shaped, and one cannot eat into a big fat man in one bite. Because I don't want "Daniel" to mislead people, I give the following suggestions:《边关烽火情》：上世纪30年代的榆林。 广袤苍茫的黄土高原上，一无所有的孤女“羊粪蛋”杨芬机缘巧合下与只手遮天的“榆林王”高德昌相识，几番冤家路窄的冲突际遇，高德昌被这个有着旺盛生命力的姑娘吸引，产生了从未有过的炽热情感，于是展开了一幕又一幕惊世骇俗、轰轰烈烈的求婚攻势。在杨芬面前，高德昌的百炼钢也化成了绕指柔。杨芬却不曾被高德昌惊世骇俗的求爱所打动，因为她早已芳心暗许给了另一个人…… 《边关烽火情》：地下党员何少怀接受组织安排到榆林工作，以皮货店作为联络站，而杨芬则成了皮货店的一个小伙计。在杨芬眼中，何少怀与众不同，他儒雅睿智，宽厚坚毅，与高德昌性情迥异。这唤起了她深埋在心中女人特有的深情与温柔，而此时的何少怀也对杨芬产生了脉脉情思。但是，当何少怀不得不在革命需要和个人感情之间做出选择时，他坚守了自己的原则与信仰，将自己对杨芬的感情永远隐忍在了心中。为了完成重要任务...Let's look at the implementation class first:　　故事围绕一家名为“鲍勃汉堡店”的餐厅展开，讲述店主鲍勃一家和邻里之间的有趣故事。这次他们遇到了大麻烦，汉堡店门口塌陷出大坑，鲍勃和琳达还得继续维持餐厅的生意。与此同时，孩子们也正试图揭开一个能帮助挽救自家餐厅的谜题。In addition, As Zhang Xiaobo said, On the front line at that time, Wearing or not wearing a helmet is a "choice", Because Vietnam is located in Southeast Asia, The climate is hot and humid, Helmets are heavy and airtight, Wearing it is very easy to cause heatstroke, Particularly in fast maneuvers, This is the easiest way to do strenuous activities such as running. Therefore, in order for the troops to fight more efficiently, There would be no mandatory order for everyone to wear a helmet, If you don't want to wear it, you can choose to wear a cloth cap with eaves. So in the vast majority of relevant historical photos, Among our troops participating in the war, The highest percentage of helmets is worn by artillery, It is mainly used to defend the fragments of enemy artillery and various hard objects brought up by explosions in artillery warfare. Even some border militiamen wore helmets in large numbers, On the contrary, the impact is at the forefront, Infantry units carrying out a large number of mobile combat missions are rarely worn, Investigate its reason, It is for the infantry troops to carry out large-scale interspersed operations frequently. Exercise is enormous, It is really inconvenient to wear helmets, This approach has both advantages and disadvantages, It is not good to judge right or wrong here, but when facing such a horrible "killer bee" on the ground on 149, it is regrettable and regrettable that the heavy casualties caused by the low wearing rate of helmets have to be said. If they had worn helmets instead of military caps like Zhang Xiaobo, the casualties caused by the sting attack of "killer bee" would have been much smaller.