有关天疱疮的诊断依据的描述不正确的是（） A.松弛性大疱、易破

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问题单项选择题

有关天疱疮的诊断依据的描述不正确的是（）

A.松弛性大疱、易破裂且不易愈合

B.组织病理显示表皮下水疱及棘层松解

C.免疫病理可见棘细胞间有IgG和C3网状沉积

D.间接免疫荧光可检出血清中的天疱疮抗体

E.尼氏征阳性

答案

参考答案：B

单项选择题

During project execution，the customer authorizes and funds a scope change which requires a major change in the schedule．The baseline schedule （）．

A．now becomes the new schedule，including the changes，and the original baseline is disregarded

B．is still the original baseline but annotated to reflect that a change has taken place

C．is amended to reflect the scope change，but the original baseline is still maintained for post-project review

D．is meaningless since every schedule update changes the baseline

问答题简答题

反滤、过渡和排水材料的主要要求是什么？