脊休克的发生机理是()A.损伤性刺激对脊髓的抑制作用 B.失去了高级中枢的抑制作用

题型:单项选择题

问题:

脊休克的发生机理是()

A.损伤性刺激对脊髓的抑制作用

B.失去了高级中枢的抑制作用

C.反射中枢破坏

D.脊髓供血障碍

E.失去了大脑皮层的下行始动作用

考点:基础医学生理学生理学题库
题型:单项选择题

下列有关成年男性正常细胞分裂的叙述,正确的是[ ]

A.有丝分裂与减数分裂相比,基因突变和基因重组的概率基本相同

B.有丝分裂后期和减数第二次分裂后期的所有细胞中都能出现两条Y染色体

C.减数第一次分裂后期与减数第二次分裂后期的细胞中都含有两个染色体组

D.有丝分裂中期和减数第二次分裂前期细胞中的核DNA含量相同

题型:单项选择题

New rules and behaviour standards (行为规范) for middle school students came out (颁布) in March. Middle schools are going to use a new way to decide who the top students are. The best students won’t only have high marks. The following are some of the new rules.

Tell the truth. Have you ever cheated (作弊) in an exam? Don’t do it again! That’s not something honest students should do.

Do more at school. Good students love animals and care for other people. April is Bird Loving Month in China. Is your school doing anything to celebrate it? You should join! In that way, you can learn more about animals and how to protect them.

Be open to new ideas. Have you ever thought people could live on the moon? Maybe you’ll find another earth in space in the future. Everyone’s new ideas are important.

Protect yourself. Has a thief ever taken money from one of your classmates? Don’t let it happen to you. If you have to go back home late, you should let your parents know.

Use the Internet carefully. The Internet can be very useful for your study. But some things on the Internet aren’t for kids, so try to look at the good web pages. You can use the web pages for fun or homework.

1. When did the new rules and behaviour standards for middle school students come out?

_________________________________________________________________________.

2. What should the best students do in an exam?

_________________________________________________________________________.

3. What should you do if you have to go back home late?

_________________________________________________________________________.

4. What can the children use the good web pages for?

_________________________________________________________________________.

5. What is the right attitude(态度) to new ideas?

_________________________________________________________________________.

题型:单项选择题

关于慢性肾衰竭患者的饮食治疗,下列哪项是错误的().

A.低蛋白饮食,蛋白质摄入量根据GFR调整

B.低热量饮食

C.少尿和高血压患者给予低盐饮食

D.食用富含维生素、易消化食物

E.优质动物蛋白,尽量减少植物蛋白

题型:单项选择题

船舶排水量吨位的用途是()

A.表明各国造船工业的发展水平;

B.船舶通过运河时交纳费用的依据;

C.船舶向港口报关纳税的依据;

D.可表示空船重量。

题型:单项选择题

男性,50岁,消瘦无力3个月,呕吐宿食,X线钡餐见胃小弯侧胃窦部有充盈缺损,应诊断为

A.胃溃疡
B.十二指肠溃疡
C.胃癌
D.胃溃疡并幽门梗阻
E.胃癌幽门梗阻

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