Mendelson综合征是由误吸哪项引起()
A.碱性食物碎片
B.低酸性胃液
C.酸性食物碎片
D.高酸性胃液
E.胆汁液
参考答案:B
Shy people get when they have to speak in public. [ ]
A. worry
B. confident
C. nervous
D. creative
贾敏效应