温度计的发明者是() ["A、牛顿","B、伽利略","C、开普勒","D、胡克"]
下列哪种宇宙系统的温度是最高的() ["A、约150亿年前宇宙大爆炸时的温度","B、太阳中心的温度","C、太阳表面的温度","D、地球内部的温度"]
()is a measure of the market value of all goods and services within the boundaries of a nation. ["GNP","GDP","FDI","MNC"]
现代电磁波谱研究的波长范围是什么样的() ["A、十的负十七次方到十的六次方米","B、十的负十八次方到十的六次方厘米","C、十的负十八次方到十的六次方米","D、十的负十八次方到十的七次方厘米"]
夜视镜是利用什么做出来的() ["A、电磁波","B、微波","C、紫外线","D、红外线"]
麦克斯韦方程组是把什么统一起来的()