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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.At present, many of Gao Yin's works have been deleted from students' textbooks, and Gao Yin himself is sorry for this.MaximumDynamicBacklog is the sum of the currently active half and idle connections. When this sum exceeds a certain threshold, the system rejects SYN packages. Microsoft recommends that the MaximumDynamicBacklog value should not exceed 2000.我没有多可怕，倭人也没有多可怕，是你们让我们变得可怕。　　由Bob Fisher﹑Rob Greenberg及Tad Quill联手执笔的《穆迪一家》讲述Moody一家（ 包括主角Sean Sr.﹑妻子及三个孩子）共聚过圣诞，然而他们各自各有自己的怪癖及难处，这些集合起来使到节日走向变得荒诞起来。少年感觉香儿攥住他手指的小手微微颤抖，低头一看，她脸色发白。Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.