现代世界最恐怖的声音是什麽？是大自然中野兽的咆哮，还是慑人心魂的空袭警报？很显然，答案是后者。当战争的威胁不光出现在地面，而是更多地来自空中的时个，防空便为国防设施中最重要的组成部分之一。*然而，在和平安宁的年代里，人们又容易忽视人民防空战备工作的重要性， What is the most horrifying voice in the modern world? Is the roar of beasts in nature, or breathtaking air attacks alert? Obviously, the answer is the latter. When the threat of war does not only appear on the ground, but more from the air, air defense is one of the most important components of defense facilities. * However, in an era of peace and tranquility, people can easily overlook the importance of people’s air defense combat readiness work.