色谱法中,分配系数是指组分在固定相和流动相之间分配平衡时的
A.浓度之比B.质量之比C.体积之比D.物质的量之比E.时间之比
参考答案:A
先阅读,再判断。(对的写“T”,错的写“F”。)
Hi! My name is Mike. I'm ten years old. I am an American boy. I am a pupil (小学生).
My mother is a teacher. My father is a doctor. We are happy together.
( )1. Mike is eight.
( )2. His mother is a teacher.
( )3. His father is a doctor.
( )4. Mike is a doctor.
( )5. Mike is from America.
被乙型肝炎患者血液污染的针头刺破皮肤后,主要宜采取?()
A.碘酒消毒;
B.应用干扰素;
C.立即注射乙肝疫苗;
D.注射丙种球蛋白;
E.注射高价乙肝免疫球蛋白。