缺乏维生素B12引起的贫血是()
A.大细胞正色素贫血
B.正细胞正色素贫血
C.小细胞低色素贫血
D.小细胞正色素贫血
E.大细胞低色素贫血
参考答案:A
______ from the top of the tower, the south foot of the mountain is a sea of trees.
A.Seen
B.Seeing
C.Having seen
D.To see
压充电适用于蓄电池的初充电、补充充电、去硫化充电