慢性肾小球肾炎的主要发病机理是()
A.链球菌感染
B.病毒感染
C.感染后免疫损害
D.霉菌感染
E.健存肾单位代偿性高负荷
参考答案:C
Allen had to call a taxi because the box was _____ to carry all the way home.[ ]
A. much too heavy
B. too much heavy
C. heavy too much
D. too heavy much
职业安全卫生管理体系的建立,使企业安全管理更具系统性。