冠心病心绞痛疼痛的性质为() A.针刺样疼痛 B.刀割样疼痛 C.压迫性疼痛 D.跳

题型:单项选择题

问题:

冠心病心绞痛疼痛的性质为()

A.针刺样疼痛

B.刀割样疼痛

C.压迫性疼痛

D.跳痛

E.隐痛

考点:预防医学科住院医师心血管内科心血管内科题库
题型:单项选择题

Television has taken the place of schools as the main educator(教育者) in America. There are several reasons for this. First, there is the number of hours. While Americans spend about 13,000 hours in schools, they spend 15,000 to 16,000 hours in front of a TV set. Second is the age at which viewers(观看者) start watching TV. People start watching and understanding TV at about the age of 3, which is several years before they start to do school work. Finally, there is the number of viewers. About 90,000,000 young people are attending school, but most of the Americans watch TV every day. It seems, then, that TV shows are taking the place of teachers and professors as the educators in America.

小题1:The main idea of this passage is ___________.

A.TV is more important than school

B.fewer and fewer children go to school

C.There is not a school which has no TV set in America

D.TV plays a great part in American people’s life小题2:How many reasons why television has become the main educator are mentioned in the passage?

A.Two

B.Three

C.Four

D.Five小题3:The first reason shows ____________.

A.now children go to school less often than their parents did

B.in his life an American spends more time watching TV than at school

C.a TV program usually gives lessons of 15,000--16,000 hours

D.parents think 13,000 hours of school is not enough小题4:In American, a child starts going to school _________.

A.when he is 3

B.when he is about 6 or 7

C.when he is able to understand TV

D.after he starts to do school work小题5:Every day in America ______________.

A.teachers and professors watch TV

B.90,000,000 young people watch TV

C.not only young people watch TV

D.15,000--16,000 people each hour watch TV

题型:单项选择题
已知y=f(x)对任意实数x,y都有f(x+y)=f(x)+f(y)+2xy.
(1)求f(0)的值;
(2)若f(1)=1,求f(2),f(3),f(4)值,猜想f(n)表达式并用数学归纳法证明;
(3)若f(1)≥1,求证:f(
1
2n
)>0
题型:单项选择题

下列关于植物体的组成和细胞结构的叙述,不正确的是(  )

A.有的植物细胞中没有叶绿体

B.西瓜在结构层次上属于组织

C.植物体的各种组织是经过细胞分化形成的

D.表皮破损的番茄很快腐烂是保护组织遭到破坏的缘故

题型:单项选择题

用于定义类成员的访问控制权限的一组关键字是

A.字段值的“惟一”

B.表达式的“惟一”

C.索引项的“惟一”

D.列属性的“惟一”

题型:单项选择题

根据相关规定,证券经营机构将自营业务与经纪业务混合操作所受到的最严厉的处罚是( )。

A.没收非法所得
B.由司法部门解决
C.撤销相关业务许可
D.警告并处以非法所得加倍罚款

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