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【多选题】
从外观上区别单晶硅和多晶硅电池片下列哪些说法是正确的A.
单晶硅有倒角，多晶硅是一个正方形
B.
多晶硅电池表面有大面积的大理石花纹，单晶硅电池表面是细小而均匀的颗粒
C.
单晶硅电池表面多为褐色或黑色，多晶硅电池表面多为蓝色
D.
单 晶硅电池片尺寸为 125×125， 多晶硅电池片尺寸为 156×156
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