英国科技人员研制出自动灭火陶瓷砖,这种砖砌成的房屋发生火灾时

英国科技人员研制出自动灭火陶瓷砖,这种砖砌成的房屋发生火灾时,在高温烘烤下砖会裂开并喷出氦气和二氧化碳。自动灭火陶瓷砖的灭火原理是(             

A. 清除可燃物                      B. 降低温度                      C. 隔绝氧气                      D. 降低可燃物着火点

答案

C

相关题目

读环境、资源和人口关系示意图,回答P过程中可能出现的问
读环境、资源和人口关系示意图,回答P过程中可能出现的问题是( )①过度开发导致资源枯竭 ②过度排放污染物超过环境的自净能力 ③生产过程导致工
学校科技小组在计算机上模拟航天器变轨返回试验.设计方案
学校科技小组在计算机上模拟航天器变轨返回试验.设计方案如下图:航天器运行(按顺时针方向)的轨迹方程为=1,变轨(即航天器运行轨迹由椭圆变为抛
In early January this year, the rate of UFO reports were steady, around three p
In early January this year, the rate of UFO reports were steady, around three per weeks(week). When however, on Monday, January 16. a science fiction film about visitors to outer space was shown on
What language does she______,do you know? A.speak               
What language does she______,do you know? A.speak                  B.talk                       C.tell                  D.say
已知函数f(x)=lg(x+1)(x>0),则f(x)的反函数为________.
已知函数f(x)=lg(x+1)(x>0),则f(x)的反函数为________.
It’s a mistake to think of Florida only        (从……方面) its to
It’s a mistake to think of Florida only        (从……方面) its tourist attractions.
Stanford University is the second ________university in the world.A.largeB.l
Stanford University is the second ________university in the world.A.largeB.largerC.largestD.the largest
(2009江苏卷)(本题满分10分) 在平面直角坐标系中,抛物
(2009江苏卷)(本题满分10分) 在平面直角坐标系中,抛物线C的顶点在原点,经过点A(2,2),其焦点F在轴上。 (1)求抛物线C的标准方程; (2)求

最新题目