α-氨基酸脱氨后生成的α-酮酸有三条代谢去路,即(),()和()。动物体内生成尿素的

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问题:

α-氨基酸脱氨后生成的α-酮酸有三条代谢去路,即(),()和()。动物体内生成尿素的主要器官是()。

考点:化学工程生物化学生物化学题库
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禁食后,机体肝糖原耗尽需要多少时间()

A.12小时

B.24小时

C.36小时

D.48小时

E.72小时

题型:填空题

()means the conducting ofbusiness communication and transaction over network and through computers.

A.E-mail

B.E-Government

C.E-text

D.E-Commerce

题型:填空题

Happiness is for everyone. You don' t need to care about those people who have beautiful houses with large gardens and swimming pools or those who have nice cars and a lot of money and so on. Why? Because those who have big houses may often feel lonely and those who have cars may want to walk on the country roads at their free time.

In fact, happiness is always around you if you put your heart into it. When you are in trouble at school, your friends will help you; when you study hard at your lessons, your parents are always taking good care of your life and your health; when you get success, your friends will say congratulations to you; when you do something wrong, people around you will help you to correct it. And when you do something good to others, you will feel happy, too. All these are your happiness. If you notice a bit of them, you can see that happiness is always around you.

Happiness is not the same as money. It is a feeling of your heart. When you are poor, you can also say you are very happy, because you have something else that can' t be bought with money. When you meet with difficulties, you can say loudly you are very happy, because you have more chances to challenge yourself. So you cannot always say you are poor and you have bad luck. As the saying goes, life is like a revolving(旋转的)door. When it closes, it also opens. If you take every chance you get, you can be a happy and lucky person.

小题1:When you fall down in a PE class, both your teacher and your classmates will ______.

A.laugh at you

B.play jokes on you

C.quarrel with you

D.help you up小题2:What will your friends say to you when you make great progress?

A.Congratulations.

B.Oh, so do I.

C.Good luck.

D.It' s just so-so.小题3:Which idea is NOT RIGHT according to the passage?

A.Happiness is always around you though difficulties come towards you.

B.You can get help from others when you make mistakes.

C.You can still be a happy person even if you have little money.

D.People who have cars would never like to walk in the open air.小题4:Which of the following is this passage about?

A.Bad luck

B.Good luck

C.Happiness

D.Life.

题型:填空题

球根花卉在()土壤上栽植应该适当深些。

A、与土壤没有关系

B、壤土

C、粘重

D、疏松

题型:填空题

下列选项中,防火墙无法带来好处的是( )。

A.过滤不安全的服务

B.控制对系统的访问

C.代替安全策略

D.增强保密性

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