效度

题型:名词解释

问题:

效度

考点:大学试题体育科研体育科研题库
题型:名词解释

(1)A元素的负一价离子和B元素的正一价离子的电子层结构都与氩相同,A的离子结构示意图为         ,B元素名称为            

(2)C元素基态原子的M层全充满,N层没有成对电子,只有一个未成对电子,C的元素基态原子的外围电子排布式为             .

(3)D元素的原子序数为33,该元素原子的核外电子共有   种不同的运动状态,此元素原子的核外电子排布式是                        

(4)N≡N的键能为942kJ·mol-1,N—N单键的键能为247kJ·mol-1,通过计算说明N2中的       键更稳定(填“σ”或“π”)。

(5)下列4种物质熔、沸点由高到低排列为           (填序号).

①金刚石  ②晶体锗  ③晶体硅  ④金刚砂

题型:名词解释

患者,女,23岁,轻度贫血,听诊发现心尖区收缩期吹风样杂音,柔和2/6级,较局限,心界不大。杂音的疾病可能为

A.贫血性心脏病

B.功能性杂音

C.二尖瓣关闭不全

D.二尖瓣狭窄

E.高血压性心脏病

题型:名词解释

Do people in your country hug in the street? In some countries, it is common for people to show affection(亲密) in public places. In the United States, for example, we often see couples hold hands, hug and kiss on the street, in the park, in the restaurant and even on trains and buses. But in some other countries, people never show affection in public places because their customs don’t permit this, for example, in Korea and China. So, when Korean and Chinese people visit the United States, they sometimes feel very surprised when they see Americans hug and kiss on the street.

In some countries, friends show physical affection to each other. In some South American countries, female friends walk arm in arm when they walk along the street together. In Italy and Russia, male friends often kiss each other on both cheeks when they greet. In most countries, men don’t kiss or hug when they greet each other. They usually shake hands or pat each other on the back. People around the world are different in the amount, manner and situation in which they touch each other.

67. The main idea of this passage is ____.

A. the custom in Korea and China are exactly the same.

B. Koreans and Americans can never understand each other.

C. South Americans are more friendly than North Americans

D. Different countries permit different amounts of touching in public

68. Chinese and Korean feel surprised to see Americans hug and kiss on the street because ____.

A. they never hug or kiss

B. they themselves are polite

C. their own customs don’t permit such conduct

D. kissing each other is not allowed on the street

69. Which of the following is true according to the passage?

A. Chinese people often kiss on the street. 

B. In all countries public affection is permitted.

C. In many countries, men shake hands when they greet each other.

D. The Americans are not as polite as people in other countries.

70. From the passage we can guess____.

A. Korean people often kiss and hug on American streets

B. People all over the world like to kiss their friends

C. Americans like to kiss and hug Korean people on the street

D. It may be strange to Americans to see two men kiss on both cheeks.

题型:名词解释

假设A公司的股票现在的市价为30元。有1份以该股票为标的资产的看涨期权和1份以该股票为标的资产的看跌期权,执行价格均为32元,到期时间是1年。根据股票过去的历史数据所测算的连续复利收益率的标准差为1,无风险利率为每年4%。
要求:

A公司的普通股最近几个月来交易价格变动较大,投资者确信1年后其价格将会有很大变化,但是不知道它是上涨还是下跌。基于投资者对该股票价格未来走势的预期,会构建一个什么样的简单期权策略价格需要变动多少(精确到0.01元),投资者的最初投资才能获利

题型:名词解释

硫酸亚铁可用于治疗

A.小细胞低色素性贫血
B.巨幼红细胞性贫血
C.恶性贫血
D.溶血性贫血
E.再生障碍性贫血

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