（）是中国金融行业的根认证中心，在我国金融行业占有举足轻重的地位。A、CFCA B、C

白色农业也称微生物农业，是把传统农业的动植物资源利用扩展到微生物新资源利用，创建以微生物产业为中心的新型工业化农业．白色农业生产的食品属于白色食品．下列属于白色食品的是（　　）

A．海参

B．面粉

C．白砂糖

D．葡萄糖

举例说明在育种上如何利用染色体数目的改变。

电机运行中，由于某种原因造成相断路后，电机仍在运行，我们称之为（）

A.过载运行

B.断相运行

C.低载运行

D.正常运行

哪一项不是肝硬化门脉高压的CDFI表现 （

A．门静脉血流速度减慢

B．门静脉双向血流

C．肝动脉血流量减少，流速增高

D．显示侧支循环的血流信号

E．门静脉管腔内偶可见充盈缺损

A dog enthusiast took home two puppies from the dog shelter. He fed one of the puppies super-premium canned dog food, while he fed the other a generic brand from the grocery store. The dog fed on the generic brand gained weight twice as fast as the dog fed the super-premium brand. Because of the difference in these results, the dog enthusiast concluded that the generic brand actually provided nutrition superior to that of the super-premium brand.
Each of the following, if true, would weaken the evidence for the dog enthusiast’s conclusion except for which of the following ？（）

A. A dog will sometimes gain more weight when eating inferior-quality food because he must eat more of it to obtain the nutrients he needs.

B. The dogs were of mixed breeds and appeared to be descended from dogs of different sizes.

C. Both dogs ate all of the food given to them at each serving.

D. The dog enthusiast did not give the two dogs equal amounts of their respective foods.

E. The dog who received the super-premium dog food suffered from a digestive system disorder that hindered his growth.