A-A+
To make electrochromic windows change color wh
问题详情
To make electrochromic windows change color，what is applied to the window glass？
A Electricity.
B Tungsten oxide.
C A battery.
D A voltage.
参考答案
参考答案：B
【解析】第五段第二句提供了答案。a sheet of glass coated with thin layers of chemical compound such as tungsten oxide中的coated是“涂上一层薄薄的……”的意思
