输血后产生的血型抗体以哪种免疫球蛋白为主()
A.IgA
B.IgD
C.IgE
D.IgG
E.IgM
参考答案:D
正式组织的特点不包括()
A.为实现组织目标
B.明确的职责
C.明确的隶属关系
D.组织成员分工协作
E.组织成员兴趣爱好一致
Her success was due to________she had been working hard.[ ]
A. that
B. the fact which
C. the fact that
D. the fact of