— It is a large and beautiful campus with a 50-metre-long swimming pool.
石墨烯是已知的世上最薄、最坚硬的纳米材料,它几乎是完全透明的,透过的光线高达97.7%;其导电性能比铜或银更好.那么,石墨烯材料不适合用来做成( )
(2016•夏津县一模)下列说法正确的是( )