题目内容

下列属于X线检查的检查方法是

A. X线摄影
B. X线透视
C. X线造影
D. 钼靶摄影
E. 体层摄影

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DR较CR进一步缩短了成像时间。

A. 对
B. 错

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