乔安山和雷锋是最最亲密的好战友,岂料他们在执行一次任务时,乔安山倒车时不慎将电灯柱碰倒,砸在了在车尾指挥的雷锋身上,雷锋从此离开了人间。之后乔安山后悔不已,回想起往日雷锋全心全意帮助自己的点点滴滴,乔安山不禁潸然泪下。乔安山决定在自己往后的日子里,要以雷锋为榜样,全心全意为人民服务……。核试验科教记录片。是自人类发明原子弹、氢弹以来的各种核爆炸记录,采访了许多美国参与核试验的专家,非常珍贵的第一手资料。著名的“小男孩”(广岛)和“胖男人”(长崎)就在这里,不可不看! On July 16, 1945, at a site called Trinity, a plutonium bomb was assembled and brought to the top of a tower. The bomb was detonated, producing an intense flash and a fireball that expanded to 600 meters in two seconds. The explosive power was equivalent to 18.6 kilotons of TNT. It grew ...。