论文部分内容阅读
抗日战争期间,一支抗日游击队得到情报:日本鬼子的车队在下午将通过村前的大桥.队长决定立即行动,在大桥上炸鬼子.群情振奋,士气昂扬,大家表示一定要重创侵略者.他们迅速把炸药埋在桥下.并接上电池、开关.只要一声令下,合上开关,把电流送进炸药包,在那里便会跳出火花,引爆炸药.是什么把电流送进了炸药包呢?我们知道,水的定向移动形成水流,是因为水面
During the War of Resistance Against Japan, an anti-Japanese guerrilla received intelligence that in the afternoon the Japanese devils' convoy would pass the bridge in front of the village, and the captain decided to act immediately to blow the devils on the bridge. They quickly buried the dynamite under the bridge, and connected the battery to the switch.Once the switch, the switch was turned on and the current was fed into the dynamite bag, where it would jump out of the spark and detonate the dynamite.What brought the current into the dynamite We know that the directional movement of water to form a water flow, because of the water