单纯性肾病的病理改变多数属于
A.微小病变型
B.膜性肾病型
C.增殖病变型
D.系膜增生型
E.局灶性节段性肾小球硬化
参考答案:A
Frank insisted that he was not asleep ________ I had great difficulty in waking him up.[ ]
A.whether
B.although
C.for
D.so
有关铅烟尘在人体内的吸收与代谢,下列哪个数据是错误的()
A.在肺组织吸收率大于70%
B.在消化道吸收率为5%~10%
C.在血液中90%与RBC结合
D.体内铅负荷的90%在骨组织
E.体内铅70%经由肾脏排出