下列成分有可能与大分子抗原结合而出现肉眼可见反应的是()。
A.F(ab’)2段
B.IgG的H链
C.Fc段
D.IgG的L链
E.Fab段
参考答案:A
The nurse is interviewing the mother of a 7-year-old child. Which of the following symptoms reported by the mother would most lead the nurse to suspect that the child has type 1 diabetes
A. Recent bed wetting.B. Poor appetite.C. Weight gain.D. Boundless energy.
斜孔孔壁较易坍塌,故孔内水头、护壁泥浆相对密度和粘度等指标应比钻竖孔时稍大。掺用适量添加剂以改善泥浆性能。