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这个人是谁？感觉设好生熟悉，奈何什么也想不起来。竟然没有好的法子解决。　　《闪电侠》的Kim Engelbrecht饰演，Reyka Gama，一位心理有缺陷但才华横溢的犯罪侧写师。备受过去困扰的她，正在调查夸祖鲁-纳塔尔省甘蔗地里一名连环杀手犯下的数起残忍谋杀案。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.The First World War was a human catastrophe at the beginning of the 20th century. The war caused unprecedented disasters to the people of all countries. The warring parties mobilized a total of 73.4 million troops, more than 29 million troops directly involved in the war, about 10 million people died in the battlefield, about 20 million people were injured, more than 1.3 billion people were affected by the war, accounting for 75% of the world's total population at that time, and the economic losses caused by the war amounted to 270 billion US dollars.田夫子唤李慕琴等大些的女娃儿搬了凳子来，他们就施施然坐下了。For interface programming, a lot of changes that may occur in the system in the future can be isolated. Why? If the code is written for an interface, he can implement the interface with any new class through polymorphism. However, when the code uses a large number of specific classes, once new specific classes are added, the code must be changed. Violating the opening and closing principle.