A smart windows is smart mainly because_____.
A.it can change its size. B.it can change its structure. C.it can change the voltage of electricity. D.it has a sort of memory.正确答案D
A smart windows is smart mainly because_____.
A.it can change its size. B.it can change its structure. C.it can change the voltage of electricity. D.it has a sort of memory.正确答案D