系统性红斑狼疮病人合并肾功能不全时其饮食宜
A.低盐高蛋白B.高蛋白C.低钾高蛋白D.低盐低蛋白E.高钾高蛋白
参考答案:D
Small private companies can' t _____with big national companies, so they must try their best
to win part of the market.
[ ]
A. deal
B. compete
C. work
D. share
受精卵中的大量的mRNA是在卵细胞受精之前就已经转录好的,但要在受精后才能发挥作用()