不会引起尿液pH值升高的疾病是()
A.进食较多的蔬菜
B.服用小苏打或碳酸钾
C.尿内含大量血液
D.尿液被细菌污染
E.进食蛋白质较高的食物过多
参考答案:E
—Does your uncle still smoke?
—He given it up. It’s two years ever since he .
A.can’t have; smoked
B.may have; smoked
C.should have; has smoked
D.should have; didn’t smoke
测定Ag+含量时,选用( )标准溶液作滴定剂。
A.NaCl
B.AgNO3
C.NH4SCN
D.Na2SO4