—Is this ______ eraser?
—Yes, it's his eraser. [ ]
A. my
B. his
C. her
D. your
答案:B
下列指标中哪项可以用来描述计量资料的离散程度()
A.P75
B.G
C.M
D.R
E.I
噻嗪类利尿药的利尿作用机制是()
A.增加肾小球滤过
B.抑制近曲小管碳酸酐酶,减少H-Na交换
C.抑制髓袢升支粗段髓质部Na/K/2Cl共转运子
D.抑制远曲小管近端Na/Cl共转运子
E.抑制远曲小管K-Na交换