问题 单项选择题

放射免疫分析法中,下列有关准确度的描述正确的是()

A.测得最少量的物质浓度

B.重现性

C.检测到单一物质的最高浓度

D.测定值与真值(或期望值)接近程度

E.确定回收率

答案

参考答案:D

解析:

准确度:国际临床化学联合会(IFCC)将准确度定义为分析项目测定值与其“真值”之间的一致性。实际上,分析项目的真值可使用不同的参考方法技术获得。然后通过使用系统误差或总误差概念来确定方法的准确度,并由它评价分析项目真值与其测定值之间一致性。

【考点】:性能参数

阅读理解

阅读理解。   

阅读短文,从每题所给的 A、B、C三个选项中,选出最佳选项回答问题或完成句子。

    Last year, Shanghai-born Charles K. Kao and two North American scientists got the 2009 Nobel Prize(诺贝尔奖) in Physics together. Their work made the Internet come into a new age.    

    Kao, 77, was born in Shanghai in 1933. He is famous for finding out how to transmit(传输) light signals(信号) over long ways through glass fibers(玻璃纤维) as thin as a human hair. His work makes the

Internet information transmit faster around the world, Kao was vice chancellor(副校长) of the Chinese

University of Hong Kong from 1987 to 1996. He doesn't work, and live in Hong Kong now.    

    The Chinese people were pleased to learn the good news. “The people of Hong Kong and I send our

congratulations to Kao on receiving the prize…Kao is also a true gentleman(绅士). We are greatly proud

to have such an excellent person in Hong Kong.”Zeng Yinquan once said.

    Willard Boyle, a Canadian American, and George Smith of the United States got the other half of the

prize.

1. Charles K. Kao was born in _______________.   

A. Shahghai

B. Hong Kong

C. New York

2. How many scientists got the 2009 Nobel Prize in Physics together?

A. One

B. Two

C. Three

3. Zeng Yinquan thinks Kao is ____________.

A. an excellent person in Hong Kong          

B. a good student          

C. an honest friend

4. Which of the following is NOT true?

A. Kao's work makes the Internet information transmit faster around the world.          

B. Kao is still working in the Chinese University of Hong Kong now.          

C. Willard Boyle and George Smith are both scientists.

5. The Chinese people feel __________ at the news that Kao got the Nobel Prize.

A. interested

B. surprised

C. happy

实验题