高纯阴极铜品位应大于:()
A99.99%
B99.95%
C99.5%
D99%
参考答案:A
The good thing about children is that they very easily to new environments.
A.appeal
B.adapt
C.attach
D.apply
有关鲜红斑痣下列叙述正确的是()
A.本病又叫杨梅状痣
B.本病又叫毛细血管扩张痣
C.本病不叫葡萄酒色痣
D.本病不属先天性疾病
E.本病与饮酒过多有关