以下哪项不是急性肠系膜上静脉血栓形成的主要因素()
A.门静脉高压症
B.腹腔内感染
C.真性红细胞增多症
D.心房纤颤
E.口服避孕药
参考答案:D
关于眼睑腺体,错误的是()
A.Moll腺为变态的汗腺
B.Zeis腺和Meibom腺均分泌皮脂
C.Zeis腺直接开口于皮肤
D.Moll腺开口于皮肤
E.Meibom腺开口于睑缘
______ are the four major activities of software configuration management. ①configuration identification ②statement report ③change control ④preparation of requirement document ⑤configuration auditing
A.①②③④
B.①②④⑤
C.①②③⑤
D.②③④⑤