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At that tail of the warhead, the drag armour-piercing firebomb is filled with a drag agent and a fireagent, Under the pressure of propellant propelling warhead, it will spontaneously ignite to produce open flame, So it can break through the oil drum and ignite or detonate the gasoline. However, the old-fashioned traced armour-piercing firebombs have obvious trajectories due to traced light when they are launched. Therefore, it is very easy to expose oneself while pointing targets to friendly forces. Therefore, the new tracer armour-piercing firebombs now equipped all start to burn and emit light only after the projectile flies out of the muzzle for a certain distance (the generally set safe distance is 100 meters, which makes it impossible for the enemy to judge the firing position with tracer ammunition, while targets within 100 meters do not need to be indicated by tracer), The principle is generally to ignite the tracer and combustion agent carried by the projectile by accumulating the heat generated by the warhead's friction with the air after flying for a certain distance to a certain extent.One particle advantage of living in the country is that it allows sourcing straight from the ground. What homegrown or bough at the market, dye materials such as onion skin, green persistmon, yam, etc. Are generated more accessible. Here's a result of blending those specific redivisions with blue dye:男主的母亲改嫁，不仅多了一个没有血缘关系的弟弟，更害羞发现弟弟就是自己著迷已久的偶像，两人同住一屋檐下发展出浪漫爱情故事。二十世纪七十年代，黄河岸边的祥符市，一座医院里发生了一件匪夷所思的事情。一名叫吴宜飞的妇产科护士，十月怀胎却不知道胎儿的父亲是谁？在那个年月，未婚先孕可谓“惊世骇俗”。在医院领导和同事们苦口婆心的“帮助”下，吴宜飞誓死不愿说出那个种下“恶果”的男人是谁。当“执迷不悟”的吴宜飞被父母赶出家门无处可去的时候，她投奔了她的同事，也是密友的何美丽。何美丽对吴宜飞未婚先孕深恶痛绝，但是她对生命的热爱使她放弃了自己的“原则”。在医院保卫科追查吴宜飞行踪的过程中，何美丽成了“同案犯”……看着已经炸开锅的网站，顾小玉想要说些什么，但是手指触及键盘，却发现早没了心情。Java is a typical object-oriented programming language, so this tutorial is based on Java to explain these 23 design patterns. If you don't know Java, please hit the "Java Tutorial" to learn.