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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.一对陷入财务困境的夫妻发现GPS系统能找到被盗的金子，但是他们必须和一对神秘的旅行者合作，在冬天深入荒蛮之郊。点赞就是给我们吃饭怕有些地方不方便进去。在一次和日军的战役中，国民党军队败退，但一个掌握着重要情报的部门被日军围困，下落不明。因此国民党军队派一个连回去营救。而新四军的一支游击队在行军途中恰好遇到并营救下该国民党情报部门主任苏白，在与日寇的战斗中，随后赶到的国民党连队与游击队前后夹攻，暂时击退日军分队，充满戏剧性的故事由此展开。两支共产党和国民党的“友军”本来也相互是敌人，但由于国共抗日一致对外而成为“友军”，但彼此的戒备并未消除。两个部队戏剧化的相遇，因为不熟悉差点冲突，在抗击日军的过程中互不服气，直至手挽手联合杀敌成为生死兄弟，最后全军覆没战死沙场。Ctrl + C: Copies the selected object to the clipboard东北大学抗日青年张北惨遭日寇灭门，他怀着一腔仇恨，欲单枪匹马与侵入中华国土的日寇做生死斗争。张北的女友、爱国青年赵微澜毅然投身共产党。身怀国仇家恨的张北与赵微澜不得不暂时分离。在孤身对日寇斗争的过程中，张北面对着金樱子的单恋、共患难的季娜和义妹花花之间或内疚、或感激、或温暖的情感，遭遇着重重险阻、屡屡受挫，幸得我党志士老铁、赵薇澜等人的数次救难和协助，得以脱离险境。在血与火的洗礼中，张北逐渐看到这些坚定的共产主义革命者身上的大义和无畏精神，开始反省自己一直坚守的独行狭义主义，终于接受我党在思想和精神上的召唤和指引。最终，张北在我党革命志士的帮助下，终完成一项项艰巨使命，并成长为一名坚强的共产主义战士。