多项选择题
临近分娩时,母畜外阴部的变化包括
A.苍白
B.干燥
C.充血
D.肿胀
临近分娩时,母畜外阴部的变化包括
A.苍白
B.干燥
C.充血
D.肿胀
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单项选择题
The landmark event of the arrival of e-commerce era is________。
The landmark event of the arrival of e-commerce era is________。
A.Alibaba founded by jack ma
B.bezos founded Amazon
C.Suning Commerce Group founded by zhang jindong
D.pinduoduo founded by huang zheng