题目内容

DR较CR进一步缩短了成像时间。

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

X线对比剂的引入方法

Genetically modified foods (GM foods), also known as genetically engineered foods (GE foods), or bioengineered foods are foods produced from organisms that have had changes introduced into their ________ using the methods of genetic engineering.

A. RNA
B. DNA
C. Protein
D. Chromosome

Herbert W. Boyer and Stanley Cohen created the first genetically modified organism (E. coli) in ______.

A. 1965
B. 1970
C. 1973
D. 1976

In ______, Rudolf Jaenisch of MIT created the first GM animal (mice).

A. 1968
B. 1972
C. 1974
D. 1978