贮存输送纯水、注射用水的设备、管道应多长时间清洗、灭菌一次
A．每周 B．每月 C．每2小时 D．每年 E．每天
参考答案：A
I remember my daughter used to ask some questions that girls _______ would ask. [ ]
A. twice her age
B. twice so old as she
C. as twice old as her
D. twice old as her age
促进肾小管Na+、K+交换的主要激素是
A．糖皮质激素B．肾素C．血管紧张素D．醛固酮E．抗利尿激素
