常见硅胶的孔结构分为()。
A.大孔硅胶
B.中孔硅胶
C.细孔硅胶
D.A、B、C
参考答案:D
It’s generally agreed that women and children can be _______ easily and therefore
they should learn more to protect themselves in life.
A.taken up
B.taken in
C.taken off
D.taken on
男性,65岁,进行性黄疸3个月,伴中上腹持续性胀感,夜间平卧时加重,消瘦著。查体:慢性消耗性面容。皮肤、巩膜黄染。腹平坦,脐右上方深压痛,未及块物,Courvoisier征阳性。首先考虑的诊断是
A.慢性胆囊炎
B.胆石症
C.原发性肝癌
D.胃癌
E.胰头癌