包涵体肌炎的病理诊断标准是()
A.肌纤维变性
B.镶边空泡及管丝包涵体
C.炎细胞浸润
D.毛细血管闭塞
E.间质增生
参考答案:B
In relation to company law, explain and distinguish between:(a) companies limited by guarantee; and (5 marks)(b) companies limited by shares. (5 marks)
蛋白质在等电点时的特征是()
A.分子静电荷是零
B.分子带的电荷较多
C.溶解度升高
D.不易沉淀
E.在电场作用下定向移动