炎症的变质性病变是指局部组织细胞()。
A.变形
B.腐败
C.变性和坏死
D.凋亡
E.水肿
参考答案:C
―When are you going there?
―I am going there______ May, the 12th. [ ]
A. in
B. on
C. at
D. for
液压传动方式有哪些主要优点?