A:肝脏部分切除后痊愈
B:造血干细胞分化为各种血细胞
C:蜜蜂的未受精卵细胞发育成雄蜂
D:小鼠腺细胞的自我复制
It's bigger than both of together.
(Ⅰ)求证:面ADE⊥面 BDE;
(Ⅱ)求直线AD与平面DCE所成角的正弦值..