试题与答案

建筑产品质量产生正常波动的因素属于()因素。 A.偶然性 B.系统性 C.一般性 D

题型:单项选择题

题目:

建筑产品质量产生正常波动的因素属于()因素。

A.偶然性

B.系统性

C.一般性

D.必然性

答案:

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参考答案:E解析: Ⅲ型超敏反应:是可溶性抗原与相应抗体(主要是IgG、IgM,也可以是IgA)结合,形成中等大小的可溶性免疫复合物,沉积于局部或全身毛细血管基底膜后,通过激活补体系统,吸引白细胞和血小板聚集...

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