关于凝胶层析的作用叙述不正确的是(). A.脱盐 B.分离提纯 C.测定高分子物质的

题型:单项选择题 A1/A2型题

问题:

关于凝胶层析的作用叙述不正确的是().

A.脱盐

B.分离提纯

C.测定高分子物质的分子量

D.高分子溶液的浓缩

E.测定高分子溶液的pH

考点:临床医学检验学主治医师临床化学临床化学题库
题型:单项选择题 A1/A2型题

阅读理解。

     Simon and I were born in the same year. We are classmates and good friends. I always listen to the

teacher carefully in class and do things as the adults (成年人) say. I am well behaved (表现好)and never naughty(调皮). I always get good marks. I am the apple of the teacher's eve. Simon is different. He is

clever but the teachers don't like him, because he is so naughty. In class he often makes faces to make

others laugh(大笑). Sometimes he asks strange questions which are hard to answer. That makes the

teacher in embarrassment(尴尬).

     One day Simon asked Mr. Smith, our history teacher; " May I ask you a question?"    

     "Go ahead, please."

     "When you are teaching a group of students, there comes another group. Then how many groups of

students do you have?"

     "Two, of course. That's the easiest question in the world."

     Simon laughed and said, "you are wrong, sir. Two groups of students joining together(加在一起)is still one group. That's the easiest question in the world."

     All the students burst out laughing.

     You see, we are so different, but we are good friends.

1.Choose the best Chinese meaning for the underlined(下面划线的)phrase.

A.老师们眼睛里的苹果    

B.老师们的好帮手

C.老师们的宠儿、掌上明珠    

D.老师们反感的学生

2.Why don't the teachers like Simon?

A.He is too clever.

B.He is so naughty.    

C.He often makes the teachers in embarrassment.

D.Both B and C.

3.Which of the following is NOT true?

A.Simon and I are good friends, but we are different.    

B.Simon and I were of the same age.

C.All the students don't like Simon.

D.In fact, Simon is a good student, too.

4.Which of the following is about Simon?    

A.He listens to the teachers carefully in class.

B.Teachers don't think he is a good student.    

C.He is never a naughty boy.

D.He is the apple of the teacher's eye.

5.Choose the best title(题目)for the passage.

A.Simon and I                        

B.A Naughty Boy.

C.How to Be a Good Student          

D.Friends in Need Are Friends Indeed.

题型:单项选择题 A1/A2型题

“家庭小实验”是指利用家庭生活用品进行化学实验。用家庭注射器能代替化学实验室中的仪器是(   )

A. 量筒    B. 蒸发皿    C. 燃烧匙

题型:单项选择题 A1/A2型题

下列贸易术语中,风险转移的界限在进口国的有()。

A.FCA

B.DES

C.DDU

D.CIP

E.CPT

题型:单项选择题 A1/A2型题

高血压、糖尿病、苯丙酮尿症均为多基因遗传病。()

题型:单项选择题 A1/A2型题

惩办就是要一律严惩。( )

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