圆柱的侧面展开图一定不能是请选择ABC'A5m5U)|1Y1L4N7U(_2C:k2]6N1F({5x,`,B:r/^8?;K
A.长方形2C:k2]6N1F({5x,`,B:r/^8?;K
B.平行四边形2C:k2]6N1F({5x,`,B:r/^8?;K
C.梯形2C:k2]6N1F({5x,`,B:r/^8?;K