【单选题】一般用于听报告记笔记或者是思考一些科学问题的时候,讲究逻辑和规则的是()
【单选题】一般用于听报告记笔记或者是思考一些科学问题的时候 ,讲究逻辑和规则的是
【单选题】NEW TRENDS IN RETAILING In past years retailers in North America have sounded a consistent theme: Bigger is better. Superstores increased in number and spread rapidly, often at the expense of smaller,...
A.
They have many products made by the same manufacturer.
B.
They have many sales during the year.
C.
They carry many different kinds of products.
D.
They sell famous brands of electronics equipment.
【简答题】通过对各种生物细胞色素C的化学结构的测定与比较,发现它们都含有104个氨基酸,序列很相似,但有所差别.下表是几种生物与人的细胞色素C的氨基酸差别的数目,这种结构上的差异程度又恰好与它们的亲缘关系远近相对应.请据表回答: 生 物 黑猩猩 猕 猴 牛 龟 鸡 鲨 鱼 苍 蝇 小 麦 向日葵 酵母菌 差异 0 1 10 12 13 23 25 35 38 44 (1)表中与人类亲缘关系最近的生物____...