不属于蛋白质变性所引起的() A.氢键断裂 B.疏水作用 C.亚基解聚 D.生物活性

题型:单项选择题 A1型题

问题:

不属于蛋白质变性所引起的()

A.氢键断裂

B.疏水作用

C.亚基解聚

D.生物活性丧失

E.分子量变小

考点:口腔执业助理医师蛋白质的化学蛋白质的化学题库
题型:单项选择题 A1型题

Audrey is a Chinese-American student. She has found many value differences between Chinese and Americans.

About money

Americans would like to spend more than they have, so many of them are always in debt(欠债). Chinese usually spend less than they have, so many of them have money left in the bank.

American kids love to make money by themselves. Chinese kids always ask their parents for money.

American parents think it is not useful to send their children to an expensive university. Chinese parents would do anything to send their children to a good university and that might make them very poor sometimes.

About school

Many American girls take part in sports, dancing and singing groups while Chinese girls take part in academic groups.

Some American students think that “B” is a gift while Chinese students think that “B” is terrible.

American parents and Chinese parents

American parents allow their daughters or sons to go out to have some part-time jobs in their free time or at the weekends. Chinese parents usually don’t allow their children to do so in middle or high schools.

小题1:What would a Chinese middle school student probably NOT do at the weekends according to the passage?

A.Study at home

B.Do part-time jobs

C.Take part in sports groups

D.Do chores小题2:Some Chinese people have money left in the bank because _______.

A.they usually spend less than they have

B.they spend more than they have

C.they don’t like spend money at all

D.they make a lot of money小题3:Which of the following is NOT mentioned in the passage?

A.Chinese parents usually give their kids money.

B.American children love to make money by themselves.

C.The reason why Chinese parents would do anything to send their children to good universities.

D.Americans usually spend more money than they have.小题4:The underlined word “academic” probably means _________ in Chinese.

A.学术的

B.娱乐的

C.运动的

D.休闲的小题5:The best title for the passage would probably be _______.

A.Differences between Chinese and Americans.

B.Chinese students and Americans

C.Chinese parents and American parents.

D.Chinese values and American values

题型:单项选择题 A1型题

正常情况下脑血流量为50±10ml/100(9·min),当CBF降至哪个范围时,细胞膜离子泵失活,细胞死亡

A.18~20ml(100g·mi

B.15~18ml/(100g·mi

C.10~15ml/(100g·mi

D.8~10ml/(100g·mi

E.0~8ml/(100g·mi

题型:单项选择题 A1型题

NetWare操作系统是以文件服务器为中心的,主要由3个部分组成:文件服务器内核、工作站外壳和_______。

A.高层通信协议

B.低层通信协议

C.TCP/IP协议

D.传输层协议

题型:单项选择题 A1型题

排序方法中,将整个无序序列分割成若干小的子序列并分别进行插入排序的力法,称为 ______。

A.希尔排序

B.冒泡排序

C.插入排序

D.选择排序

题型:单项选择题 A1型题

为响应市政府“绿色出行”的号召,小王上班由自驾车改为乘坐公交车。已知小王家距上班地点18千米,他乘公交车平均每小时行驶的路程比他自驾车平均每小时行驶的路程的2倍还多9千米,他从家出发到达上班地点,乘公交车所用时间是自驾车所用时间的

小王自驾车上班平均每小时行驶多少千米()

A.20

B.22

C.25

D.27

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