蓝汪汪的天空,万里无云。阳光照射着起机线上一排排威严整齐的喷气歼击机,直耀得人眼花缭乱;飞行员行一个个提着图囊,跨进了座舱。“呯!”一颗绿色信号弹划破了宁静的长空,随着马达的轰鸣声,机群象一支支银箭,从跑道射向高空,它们越来越小,剎那间变成了点点黑影,逐渐飞向远方了。塔台车里一片肃静。指挥员正在聚精会神地指挥着空中的飞机。今天的训练科目是高空空域,机群都已按指挥在进行演习。指挥员放下话筒兴奋地说:“嗯!飞得挺不错。”“一号,一号!我是一○。座椅后发出爆炸声,检查液压表指零,不知什么原因!” Blue sky, cloudless. The sun shines on the line a row of majestic neat jet fighters, dazzling people were dazzling; pilots line one by one carrying the bag, entered the cockpit. “呯!” A green flare pierced the quiet sky, with the roar of the motor, fleet like a silver arrow, shot from the runway to the sky, they are getting smaller and smaller, and instantly became a little dark , And gradually flew far away. Tower car quiet. The commander is concentrating on directing the aircraft in the air. Today’s training subjects are high-altitude airspace, the aircraft have been conducting exercises in accordance with command. Commander put down the microphone excitedly said: “ah! Fly very good.” “One, one! I was a .Open seat after the explosion, check the hydraulic gauge refers to zero, I do not know why!”