（）you know,this is a popular brand,which can see easily in our market.

题库:外贸函电 类型:填空题 时间:2017-06-23 19:42:15 免费下载:《外贸函电》Word试卷

（）you know,this is a popular brand,which can see easily in our market.

本题关键词:荚o,O型,荚o子,飞天o,S-O-R,O抗体,O形腿,O基因,O型血,O抗原;