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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.REJECT: Reject the data packet from passing through, and when necessary, send a response message to the data sender. The client will receive the rejected message as soon as it requests.大王，现如今汉军尽数在井陉之中。　　星虎等四人借玉盘神力流转时空之中，历经琉璃遍地华美异常的琉璃国，国人全长着三只眼睛的三目国，男人全是半人半马之身的乌斯国等神奇异乡，苦苦寻找隐藏其中的生肖转世之人……不料邪魔魑魅紧随其后，利用人类的贪婪、Circulatory system10. Os.path.split ()--Returns the directory and file name of the path. Example: