A.爆米花 B.松花蛋 C.水果皮 D.蔬菜
A.20~24℃,22~26℃,60% B.18~21℃,25℃,60~65% C.18~22℃,22~25℃,75% D.20~24℃,22~26℃,70%
A.嬰兒的食管呈漏斗 B.黏膜纖弱 C.腺體缺乏 D.彈力組織及肌肉不發(fā)達