Though Jim bought his wife a set of combs, ___ it was of no use.
A.so
B.but
C./
D.and
答案:C
肾小球滤过率与下列哪几项有关()
A.有效滤过压
B.滤过面积
C.滤过膜的通透性
D.肾血流量
E.心排血量
专用设备审核员可由财务、商务等其他人员()。
A、兼任
B、不得兼任