我国的四大海产是（）。A.大黄鱼 B.鲤鱼 C.小黄鱼 D.带鱼 E.乌贼。

有关胰岛素的药理作用的说法，不正确的是（）

A.促进糖原、脂肪、蛋白质的合成

B.增加葡萄糖的氧化和酵解

C.减少糖原异生和分解

D.促进Na+进入细胞

E.增加葡萄糖的摄取

哪些症状提示新生儿患有先天性心脏病？

下列程序段的执行结果为　　I=4　　x=5　　Do　　　　I=I + 1　　　　X=K^2　　Loop Until I＞=7　　Print"I="；I　　Print"x="；x

A．I=4x=258694

B．I=7 x=256987

C．I=6 x=365840

D．I=7 x=390625

Regulations are frequently implemented that attempt to deal with markets with high barriers to entry. Which statement is least likely to be a reason why they often fail（）

A. Regulators prevent monopolists from making a profit.

B. Regulators fail to fully understand the firms cost curves and demand schedule.

C. An existing firm in the industry is able to influence the regulatory board.

既判力