进行互斥型方案比选时,在三个备选方案中可以选择()个投资方案。
A.1
B.2
C.3
D.0
参考答案:A
用油镜观察到颗粒型荧光核型,表示自身免疫病(AID)患者血清中含有以下哪种抗核抗体()
A.抗DNP抗体
B.抗DNA抗体
C.抗ENA抗体
D.抗核小体抗体
E.抗Sm抗体
If I you, I do this exercise in a different way. [ ]
A. am, will
B. was, would
C. were, would
D. will be , would