各类恐怖活动已成为中国民航的新威胁。上个世纪,中国民航客机曾多次被叛逃者劫持,防止飞机被劫持叛逃成为那时“空防”工作的主要任务。随着时间的变迁,叛逃也成为历史,但“空防”任务依然艰巨,各类恐怖主义活动成为中国民航的新威胁。而与地面目标相比,恐怖分子更愿意在天上动手。袭击地面目标,即便使用大量炸药,往往也很难造成巨大伤亡,但波音737这种小型客机一次空难,就能造成上百人罹难,波音747或者空客A380载客量是甚至超过400人。如果再 Various types of terrorist activities have become a new threat to China’s civil aviation. In the last century, China’s civil aviation airliners have been hijacked by defectors on many occasions to prevent the aircraft being hijacked and defected to become the main task of “air defense” work at that time. With the passage of time, defection has also become a historical issue. However, the task of “air defense” is still arduous. All kinds of terrorist activities have become a new threat to China’s civil aviation. Terrorists are more willing to work in heaven than ground targets. Attack on the ground, even with a large number of explosives, is often very difficult to cause heavy casualties, but a small plane crash Boeing 737, can cause hundreds of people were killed, Boeing 747 or Airbus A380 capacity is even more than 400 people. If so