A.60-90s B.90-120s C.3-5min D.5-7min
A.3 B.4 C.5 D.6
A.牛奶變質(zhì)、全身癥狀 B.牛奶變質(zhì)、乳房腫脹 C.乳房腫脹、全身癥狀 D.乳房腫脹、未見(jiàn)全身癥狀