题目内容

施工中地基长期暴露,或()、或()后,未作适当处理,会引起基础错位事故发生。

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基础变形事故的原因有:()、()、()及施工问题等。

泥浆护壁钻孔灌注桩施工过程中出现的主要事故有:(),(),(),钢筋笼防止与设计要求不符及断桩等

Which of the following descriptions about T cell epitope is correct?

A. It locates on the surface of antigen molecules
B. It can activate T cells directly
C. It belongs to linear epitope or conformational epitope
D. It needs to be presented by MHC molecules
E. It belongs to complete antigens

Which of the followings is both an antigen and an antibody to human being

A. Bacterial exotoxin
B. Horse anti-tetanus serum
C. Toxoid
D. HLA
E. Interferon

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