有利于急性肾炎诊断的血液生化改变是
A.血清C3暂时下降
B.血浆蛋白明显下降
C.血清胆同醇升高
D.抗链“O”滴度升高
E.血免疫球蛋白升高
参考答案:A
It is difficult for us to explain phenomena of which we have little or______direct knowledge.
A.not any
B.no
C.none
D.nothing
呼吸衰竭病人最早,最突出的表现是
A.紫绀B.呼吸困难C.心率加快D.血压下降E.肝肾功能损害