膜电位突然由静息电位改变为0mV时A.Na+通道开放,产生净Na+内向电流 B.Na

题型:单项选择题

问题:

膜电位突然由静息电位改变为0mV时

A.Na+通道开放,产生净Na+内向电流

B.Na+通道开放,产生净Na+外向电流

C.Na+通道开放,不产生净Na+电流

D.K+通道开放,不产生净K+电流

考点:普通考研西医综合西医综合
题型:单项选择题

阅读理解。

     At first, Betty and Barney felt comfortable in the alien space station. They were not afraid because the

aliens were very friendly. They stood around and looked at them. Some of them pointed at Betty and Barney

and spoke to each other in a language they didn't know.

     After about thirty minutes, the aliens began to feel them and to check them. They were very interested in

Betty's and Barney's bodies. Then, some of the aliens cut pieces of hair from Betty's and Barney's heads and

took small pieces of skin from their bodies. They were like scientists. Why were they doing this?

     Betty became frightened when one alien came towards her with a long, thin needle. It placed the needle

over the centre of her stomach and pushed it in. Betty was surprised,"It was a strange feeling. There was no

pain," she said later.

     Barney had false teeth which he could take out of his mouth. When the aliens discovered the teeth, they

became very interested in them. One by one they came up to Barney and took out his teeth, then put them

back in. They did this again and again, and they all made a strange sound when they did this. Barney thought

they were laughing.

1. Where were Betty and Barney? They were _________.

A. at home

B. in a cinema

C. in a hospital

D. in a space station

2. Why did the aliens take Betty's and Barney's hair and skin? Because they wanted _________.

A. to eat them

B. to research them

C. to sell them

D. to stay with them

3. According to the story, put the following sentences into the right order: _________.

a. The aliens played with Barney's false teeth.

b. An alien put a long, thin needle into Betty's stomach.

c. The aliens looked at Betty and Barney friendly.

d. The aliens cut pieces of hair from Betty and Barney. 

A. b-a-c-d

B. b-a-d-c

C. c-d-b-a

D. c-d-a-b

4. Suppose the story is from a movie, what kind of movie can it be? It can be a (an) _________.

A. comedy

B. documentary

C. action movie

D. science fiction movie

题型:单项选择题

Th2细胞分泌的特征性细胞因子是

A.IL-2

B.IL-4

C.IFN-丁

D.TNF-p

E.IL-3

题型:单项选择题

前一时期,在世界上多个国家以及我国的广东、北京、香港、台湾等地区发现的非典型肺炎(SARS)属于(  )

A.消化道传染病

B.呼吸道传染病

C.血液传染病

D.体表传染病

题型:单项选择题

进度控制的管理措施有( )。

A.建设项目进度计划管理,必须体现计划系统的观念,树立动态控制的观念,建立科学的比较和选优的观念,实现对项目进度科学管理和控制

B.对建设项目招标和承发包模式的选择,分标和选择合理的合同结构等都要有科学的论证和相应的比较分析

C.在进行进度管理和控制的同时,应该建立风险管理制度,对影响建设项目进度的干扰和其他风险因素进行分析,根据积累的统计资料,对各种因素影响进度的概率以及进度拖延造成的损失进行预测,以减少建设项目在进度控制上的风险量

D.为实现建设项目的总进度计划,应该编制与总进度计划相适应的各类资源需求和供应计划已有关建设项目进度的全部有效信息经过专业人员收集和分析后,应形成项目建设进度报告,供项目管理有关部门和决策层使用,从而实现对项目建设进度的有效控制

题型:单项选择题

对开放性骨折最基本而重要的处理方法是()

A.早期复位及内固定后缝合伤口

B.早期复位及外固定后缝合伤口

C.早期彻底清创缝合,应用抗生素预防感染

D.早期复位及固定,应用抗生素预防感染

E.早期彻底清创缝合及适当固定

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