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作者2023-07-14 20:56:10 78 ℃0 评论

it is very difficult, or even impossible, for a man to give a right answer when a woman asks him how she looks, because men cannot have an honest yet sensitive response to the question.

according to the text, men and women evaluate their appearance differently in a way that men are satisfied with being average-looking, paying little attention to their looks, while women pay great attention to their body and image, considering their appearance as not good enough even if they are in fact attractive.

women are not confident with their appearance because they are put in an inferior social status.

girls’ toys are proportioned to have extreme measures of the body (e.g. in terms of height, weight, and waist size), whereas most of boys’ toys look weird rather than handsome.

the author points out that women care much about their appearance due to pressure from men.

she decided to buy that car because it used less gasoline and had the two ________ she couldn't live without: a gps and a cd player.

the two teams each have their strengths and their weaknesses, and thus they can ________ each other when working on the project together.

mrs. mcbride, my neighbor, was a fanatic (狂热的) gardener, planting lots of flowers and vegetables on the ________ at the back of her house.

at the end of his term in office, the governor was criticized for failure to _________ his campaign promise.

no amount of money with her life will ________ her desire for comfort.

her good looks, _____________ her elegance, is devoted to her popularity among the boys.

________ your heart ______ love and you will have a broad mind.

morgan was so excited about the concert that she ________ three outfits that morning before settling on a miniskirt and leggings with boots.

as a top industrial designer in the world today, he thinks design is ____ just making attractive products. it can also help change the way people live.

vocabulary words are the building blocks of your language ability, but don't be with just memorizing vocabulary. it's more useful to know how to use 50 words than to memorize 100. (obsess; 请用所给单词的合适形式填空。 )

girls grow up playing with dolls so that if they were human they would be seven feet tall and weigh 61 pounds, with tiny thigh and a large upper body. (proportion; 请用所给单词的合适形式填空。)

it is important for every man to understand how to treat women with respect and ___________. (admire; 请用所给单词的合适形式填空。)

the school choir does not have enough time to prepare for public performances. (rehearse; 请用所给单词的合适形式填空。 )

the cheese cake jenny made for the dinner was so delicious that it was simply . (resist; 请用所给单词的合适形式填空。 )

the approaches adopted to affix value ____ land vary from state to state, and the values of commercial land are assessed each year. (请填入正确的介词或副词。)

at the press conference two days ago, the spokean for the defense ministry refused to voice an opinion ____ the war. (请填入正确的介词或副词。)

the bridge is structurally _____________ and has some section loss, cracking, holes, tears and failed deck joints, according to a state inspection report from january. (deficiency; 请用所给单词的合适形式填空。)

the exhibits in the museum are structured like the many little threads of a spider web, with each str______ adding to the larger picture. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

scholars are exceedingly proud of their intellects and never pass up a chance to tell the world how art they are; this is typical ______ academics. (请填入正确的介词或副词。)

what stereotypes of chinese americans are depicted in the media?

how did the article in the new york times magazine describe chinese language and culture?

the dominant american society appreciates and respects chinese people for being modest and discreet.

the right way for the chinese to respond at the dinner table in america is to say directly whether they want to have anything or not.

the generalization of chinese people as “polite and modest” in american society is based upon in-depth study of chinese culture.

the author agrees with the description of chinese language and culture as being indirect and polite.

to support her opinion that to understand the difference between languages and behavior just through literal translation may lead to wrong generalizations, the author mentions how an outside observer might view chinese people by just listening to her mother speak.

the author feels that the description of chinese people as being “modest and polite” is annoying because such a description does not express new ideas, honest emotions or considered thought.

there is no one word in chinese for “yes” or “no”, which is not because chinese people are discreet, but because their answer is specific to what is asked.

the author’s mother described her sau-sau by using the expression “n______ c______” at the dinner because she believed that her sau-sau just pretended to be polite. (请根据首字母提示写出合适的单词。填写答案时请填写完整单词。)

while beef is commonly eaten by the muslim population, it is a ______ for traditional hindus.

trembling hands and legs may _______ feelings of fear or nervousness.

many parents are caught ________ because they have to protect their kids, and at the same time, promote the kids' independence.

the dominant society see chinese people from a limited perspective, ____________ the stereotype.

after the guests left, the temperature in the room suddenly became icy, and the candles flickered as ________ a gust of air had passed over them.

both nations have ____________ the ceasefire agreement on numerous occasions.

knowing that there had been some ________ between her children, marry had kept them apart as much as possible during the trip to new york.

i paused at the ________ of the two streets.

low-achieving students tend to be more dependent on ctes, but high-achieving students generally engage more often in ________ interactions with ctes.

the psychiatrist is neither for nor against one party in the legal , and everything he discovers or determines is reported in court, whether it favors the defense or prosecution arguments. (proceed; 请用所给单词的正确形式填空。)

tony is a sort of ____________ member of my family, since he comes to play with me every day. (honor; 请用所给单词的正确形式填空。)

the economic boom of south africa in the early 1960s attracted considerable numbers of from europe. (emigrate;请用所给单词的正确形式填空。 )

the discussion is to focus on eliminating all forms of religious and discrimination while guaranteeing the freedom of belief for religious minorities. (tolerance; 请用所给单词的正确形式填空。)

the union insists that scientists have freedom to speak their minds to the public without _____________. (censor; 请用所给单词的正确形式填空。 )

my computer broke down after i downloaded a software program by accident. (malice; 请用所给单词的正确形式填空。)

in the sample ysis to this article, we only used five parameters for each element. (attach;请用所给单词的正确形式填空。)

i don't want to f_________ an excuse for coming late, so i told them the truth. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

why did the author say that the bodies of the men were twisted and wounded in invisible way, according to para. 2?

the author seems to be more familiar with the life of the countrymen than that of elites.

the author was ready to live a life of those men he knew in the commonwealth of virginia.

the author agreed with the women in his university who claimed that men were guilty of having kept all the joys and privileges of the earth for themselves.

the author had envied women, as their life had been easy and comfortable to his young mind.

now as a student of a historic university, the author comes to realize that in the poor areas lower class people, regardless of their gender, had to work hard to make a living.

the author saw men do hard physical work such as farming, mining, welding and house repair in his hometown when he was a boy.

the author believed that lower class people, regardless of their gender, had to work hard to make a living.

the author can understand the women's claim that men enjoy greater joys and more privileges.

a sch______ enabled me not only to attend college, a rare enough feat in my social circle, but even to traverse the halls of a historic university meant for the children of the rich. (请根据字母提示填入正确的单词;填写答案时请填写完整单词。)

living off the ________ might sound fashionable, but in fact it requires great ability of managing one's life under unpredictable conditions.

it is a school where youngsters ________ everything --- from whether sipping soda should be allowed in classrooms to which staff should be promoted at the end of the year.

kate's $370-per-week unemployment payments started coming in, and we saw that we could just ________ on them if we squeezed out every penny.

when he used the internet for the first time, he felt he entered a completely ________ and exciting world he'd never visited before by just clicking the mouse.

he could ______ forget about the experience _____ he could forget his own name.

juice can be __________ from many fruits such as oranges and grapes.

he was accused of attempted murder after he ________ used a kitchen knife to attack officials who stormed his house to arrest him.

the fort was built on a steep hill, ______ it was easy to watch the water for invaders.

the old entrepreneur didn't ________ any of his employees during that serious recession, which won him high respect in local communities.

blinking helps ________ the surface of the eye with tears, washing away dust and other irritants and keeping the sight clear.

tear ducts (泪腺) operate on a normal basis to and protect the eye. when you have an emotion, they overact and create tears. (lubrication)

in addition to generating income, women also take responsibilities for household activities such as childcare, cleaning and preparing food, which are not as lightweight and easy as generally . (think)

you cannot imagine how fantastic the sky was with the stars __________ in the black velvet of the night. (twinkle)

research conducted by the world bank shows the more gender relationships are in a country, the higher its hiv prevalence rate is. (equal)

all neighboring countries want the agreement to have the legal force of a treaty between two states. (sovereignty)

reasoning works from the more general to the more specific. sometimes this informally called a "top-down" approach. (deduce)

ms. schmitz was almost all her life; she only learned to read and write in her 80s. (literate)

the ________ literature research should turn from commonness to difference. (compare; 请用所给单词的合适形式填空。)

the new novel is highly praised by critics, not only for its beautiful language, but also for its unique way of expressing ________ for the author's homeland. (patriotic; 请用所给单词的合适形式填空。)

which of the following statements about renewable energies is not true according to the text?

in the text, the author aims to justify that effective solutions to energy crisis must come from a body of erse energy technologies.

the use of fossil fuels threatens the health of human beings and the environment.

renewable energies are not competitive with fossil fuels in consideration of health and environmental cost.

human beings have been depending heavily on fossil fuels to meet their increasing energy demands since the industrial revolution.

nuclear power is cheap and effective though it might be disastrous.

we have to prepare for a new age of energy synthesis since fossil fuels will be eventually depleted.

there are various obstacles to overcome when we try to tap rich renewable energy sources.

due to the development of renewable energy technology, the coming energy crisis is not so severe as expected, so we don't need to work out the solutions in haste.

his parents died of the car accident when the boy was three years old, _________ live with his aunt who was a notorious miser in the neighborhood.

there is a growing ________ among ecologists and resource management specialists that bioersity cannot be adequately conserved by protected areas alone.

i can't finish the task in time; it is _________ for me.

in mexico, "marry a tree" is a ritual of giving thanks to mother earth. __________, a group of women were holding a wedding ceremony with all grooms being trees.

the biggest mistake that home-buyers make is thinking short-term. some forget to ________ the need for a home office or another bedroom if the family is going to grow.

many species are going __________ because humans are destroying and disrupting their habitats.

he examined all the paper cuts, looking for the most __________ designs.

government ________ of massive writing projects such as the one done in the 1930s resulted in a tremendous production of great works that we are still enjoying today.

in the late 1980s, in an attempt to defend marlboro against discount cigarette brands, the company decided to ________ the price by 40 cents a pack.

both administrators and faculty in the school believe that ________ between general and special educators would best serve the needs of the students. (collaborate)

last year our school was invited to send a _________ of 46 students and eight teachers to the conference and present an exhibition of students' drawings. (delegate)

now the painting is undergoing a desperately _______ restoration. when completed , it will be re-hung in a large and brand-new visitors' center. (need)

the report says 100,000 bribery and corruption cases have been uncovered this year, _________ last year's rate. (triple)

to deal with the coming energy crisis, the major challenge is to develop efficient and economically ________ versions of these technologies. (work)

the number is __________, for no one knows for sure how many trees were damaged. (definite)

the world's national parks are faced with great challenges in banlancing economic activity and environmental ___________. (preserve)

it is truly inspiring to see 2,000 young musicians marching and playing such in_________ patterns and complex music. (根据首字母提示填入正确的单词。)

to play sports is ________ winning and losing a game. more importantly, it is ________ doing your best and building your character.

no matter how successful he was as an entrepreneur, he was still ________ upon by his contemporaries because he turned a deaf ear to his employees' needs.

the advantages of biomass gasification (气化) are its ability to ________ relatively cheap stocks ________ fuel that will not produce as many emissions as the direct burning of organic solids will.

the summer travel season is ________ us, and i'm eager for its coming since there is no better time to enjoy the warm-weather break from life's daily grind.

at the end of his term in office, the governor was criticized for failure to _________ his campaign promise.

________ your heart ______ love and you will have a broad mind.

the school conducted the survey ________ after assuring the students' parents that the results will not be made public.

i didn't want to _________ an excuse for coming late, so i told him the truth.

developments in robot technology may one day ________ human beings from the burden of heavy work in labor intensive industries.

the fort was built on a steep hill, ______ it was easy to watch the water for invaders.

they did not reach a _______ on all the details so the group will reconvene in june to hammer out further specifications.

morgan was so excited about the concert that she _______ three outfits that morning before settling on a miniskirt and leggings with boots.

nobody likes a workaholic, and hence many relationships fail when one partner is ____ with work and cancels dates due to work-related emergencies.

the company has announced that it has invented a large power pack to run home ___ like refrigerators and washing machines when the electricity goes out.

as a top industrial designer in the world today, he thinks design is ____ just making attractive products. it can also help change the way people live.

the pain medication left claudia feeling rather dull and sleepy, and soon after dinner she apologized for being such poor company and ____ herself to bed.

the new novel is highly praised by critics, not only for its beautiful language, but also for its unique way of expressing ________ for the author's homeland.

since codfish are an _______ part of the marine ecosystem, their ______ would adversely affect the animals who depend on them as a source of food.

often the people who have fled their homes, fled with very little __________.

the japanese company sued the american company because it had ___________ the contract.

the biggest mistake agents see home-buyers make is thinking short-term. some forget to ________ the need for a home office or another bedroom if the family is going to grow.

the company's future will hinge on how much the customers appreciate its new products. (intend; 请用所给单词的合适形式填空。)

i decided to attend the workshop to clear up some about music education in our school. (conceptions;请用所给单词的合适形式填空。)

in order to inaugurate a new era in energy, we must act quickly and work toward international to find the most effective solutions to our energy problems. (collaborate;请用所给单词的合适形式填空。)

the pain medication left claudia rather dull and sleepy, and soon after dinner she apologized for being such poor company and excused herself to bed. (feel; 请用所给单词的合适形式填空。)

toyota is one of the world's largest of cars, with more than 50 plants across the globe outside japan. (manufacture;请用所给单词的合适形式填空。 )

the lenses of the eye lose their with age, making it harder to focus on close objects. (elastic;请用所给单词的合适形式填空。 )

the methods to be used in language education must be applied systematically in with teaching principles. (conform)

we know how to respect and tolerate each other, working together for our common goal, though our values are . (inconsistency)

in the sample ysis to this article, we only used five parameter for each element. (attach)

ms. schmitz was almost all her life; she only learned to read and write in her 80s. (literate)

i have made fun of him, but i have never questioned his and loyalty. (patriotic;请用所给单词的合适形式填空。 )

research conducted by the world bank shows the more gender relationships are in a country, the higher its hiv prevalence rate is. (equal;请用所给单词的合适形式填空。 )

when everything finally calmed down, embarrassed security guards charged the brothers with an act of terrosi. (commit;请用所给单词的合适形式填空。 )

as a novelist, do you have an overall purpose ____ terms of what it is you are trying to accomplish in your writing? (请用正确的介词或副词填空。)

the mayoral candidate said to his supporters, "i am honored by your decision, and i will try to live up ____ your expectations." (请用正确的介词或副词填空。)

after the earthquake, many stores have been reaching ____ to the poor by offering food and clothing at big discounts. (请用正确的介词或副词填空。)

an expert in interior design, he certainly can help you choose a carpet that _________ the color of your furniture. (complement; 请用所给单词的合适形式填空。)

the exhibits in the museum are structured like the many little threads of a spider web, with each str______ adding to the larger picture. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

michael's interest in japanese pop culture began with an ob____ with japanese comic books, which he used to spend most of his weekends reading at home. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

a 19th-century russian e_______ to america might never see or speak to his family again. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

that might merely have been m_________ gossip. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

many people were s_________ of the vote count. they can’t believe it is true. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

the president led a del________ of 80 business and community leaders to china last september. (请根据字母提示填入正确的单词;填写答案时需填入完整的单词。)

以“科学、艺术、健康”为题材的苹果图形创意

以“苹果落地的联想”为题材的苹果图形创意 苹果落地,牛顿发现万有引力。而你会想到什么?

1、延伸 保持目标对象——香蕉的基本造型不变,用加法的形式进行“香蕉与生命”的主题性创意。

2、改变 保持目标对象——雨伞的基本特征不变,用形象替代的手法,创造出象形意义的雨伞。

武汉大学远程虚拟实验平台最适用的学科是?

下列哪一个网址是本门课程的配套实验平台?

远程虚拟实验存在的必要性包括以下哪些?

ncslab可提供的在线实验包含以下哪些类型?

武汉大学远程虚拟仿真实验平台的可提供实验的设备数目是?

风扇和水箱的控制都采用的什么控制器?

使用风扇进行开环控制实验时,如何最快将风扇速度准确调节到50?

远程实验与虚拟实验的主要区别在于?

比例积分(pi)控制器的作用包含以下哪些?

在线实体实验控制的设备是真实存在的,对吗?

远程实验的误操作会损坏远程的实体实验设备?

球杆系统的控制器是以下哪一个?

比例微分(pd)控制器有什么作用?

本实验不存在实体球杆系统,只是三维虚拟模型和数学模型的结合。

本实验中改变球杆系统给定值有几种方式

本实验采取的参考波形为?

本实验采用什么语言来编写s函数?

风扇系统可近似看做什么环节?

本实验的实验目的是考察以下哪些内容?

本实验采用的输入信号是?

本实验涉及的的输入信号幅值为?

风扇系统在本实验中的作用为?

本实验调用的matlab工具箱命令为?

经济学可定义为:

“资源是稀缺的”指的是( )

一个经济体系必须回答的基本问题是( )

生产可能性曲线说明的基本原理是( )

资源利用包括哪些相关的问题( )

下列各项中,哪些会导致一国生产可能性曲线向外移动?

如果社会不存在资源的稀缺性,也就不会产生经济学。

以下问题中哪一个不属宏观经济学所研究的问题?

计划经济与市场经济的主要区别在于( )

下列命题中哪一个不是实证分析命题?

下列命题中,( )属于规范分析范畴。

微观经济学的基本假设有( )

经济学的研究方法包括( )

经济学按研究方法不同划分为微观经济学和宏观经济学。

当咖啡价格急剧升高时,在其他条件不变的情况下,对茶叶的需求量将( )

消费者预期某种物品将来价格要上升,则对该物品当前的需求会( )

对化妆品的需求减少是指( )

满足需求的条件包括( )

鸡蛋的供给量增加是指供给量由于( )

建筑工人工资提高将使( )

供给规律中可以反映在( )

养猪所需饲料的价格上升了,假定其他条件不变,则生猪的( )

当供求原理发生作用时,粮食减产在市场上的作用是( )

已知某商品的需求函数和供给函数分别为:qd=14-,qs=2 6p,该商品的均衡价格是( )

当某种商品的需求和供给出现同时减少的情况时,那么( )

均衡价格就是( )

供给的变动引起( )

在下列需求价格弹性的表达中,正确的是( )

若某商品价格上升2%,其需求量下降10%,则该商品的需求的价格弹性是( )

一般来讲,如果人们收入水平提高,则食物支出在总支出中的比重将会()

下列弹性的表达中,正确的是( )

关于交叉弹性,正确的是( )

下列对物品边际效用的不正确理解是( )

关于基数效用论,不正确的是( )

消费者剩余是消费者的( )

随着消费商品数量的增加( )

以下关于边际效用的说确的有( )

同一杯水具有相同的效用。

当消费某种物品的边际效用为负时,则总效用达极大值。

消费者剩余是指消费者所获得的边际效用最大。

序数效用论认为,商品效用的大小( )

同一条无差异曲线上的不同点表示( )

商品x和y的价格按相同的比率上升,而收入不变,预算线( )

在消费者收入与商品价格既定的情况下,消费者所能购买到的两种商品数量最大组合的点的轨迹是( )。

在无差异曲线和消费可能线的交点上,消费者所得到的效用达到最大。

序数效用论采用的是边际效用分析法。

在经济学中,短期是指( )

对于一种可变生产要素的生产函数而言,当总产量达到最大值而开始递减时,边际产量处于( )

当平均产量达到最大值时( )

下列说法中错误的一种说法是( )

厂商在生产过程中投入的生产要素主要有( )

边际收益递减规律成立的条件是( )

ap曲线与mp曲线交于mp曲线的最高点。

在一种可变投入的生产函数中,只要平均产量是上升的,就应增加可变要素的投入量。

在生产技术水平不变的条件下,生产同一产量的两种不同的生产要素的不同组合构成的曲线是( )

等成本曲线平行向外移动表明( )

生产要素的最佳组合点,一定是( )

无数条等产量曲线与等成本曲线的切点连接起来的曲线是( )

边际技术替代率( )

属于等产量曲线的特征的有( )

预算线与无差异曲线的切点的连线形成生产扩展路线。

经济学中长期和短期的划分是依据时间的长短划分的。

不随着产量变动而变动的成本称为( )

在长期中,下列成本中哪一项是不存在的( )

某厂商生产5件衣服的总成本为1500元,其中厂商的机器折旧为500元,工人工资及原材料费用为1000元,那么平均可变成本为( )

长期平均成本曲线成为u型的原因与( )

已知产量为500时,平均成本为2元,当产量增加到550时,平均成本等于2.5元。在这一产量变化范围内,边际成本( )

总成本分为( )

边际成本与平均成本的关系是( )

下列关于长期总成本曲线说确的有( )

平均变动成本随着产量的增加越来越少。

在长期中无所谓固定成本和变动成本之分。

平均收益是指( )

利润最大化的原则是( )

产量为4时,总收益为100;当产量为5时,总收益为120,此时边际收益为( )

已知q=6750 – 50p,总成本函数为tc=12000 0.025q2,利润最大的产量和价格分别是( )

总收益大于总成本的部分叫( )

在完全竞争条件下,平均收益与边际收益的关系是( )

在完全竞争条件下,个别厂商的需求曲线是一条( )

在完全竞争条件下,企业达到长期均衡的条件是( )

下列行业中哪一个行业最接近于完全竞争模式( )

已知某企业生产的商品价格为10元,平均成本为11元,平均可变成本为8元,则该企业在短期内( )

在完全竞争条件下,与平均收益曲线重叠的是( )

在完全竞争市场上,厂商短期均衡的条件是( )

完全竞争厂商只能被动地接受既定的市场价格。

在完全竞争条件下,产品价格等于平均收益但不等于边际收益。

在完全竞争市场上,当企业实现长期均衡时,也就实现了正常利润,且经济利润都为零。

在完全垄断市场上,厂商的边际收益与平均收益之间的关系是( )

完全垄断厂商在长期时均衡条件是( )

厂商要获得经济利润,一定是( )

在短期,完全垄断厂商( )

完全垄断企业是价格的制定者,所以它能随心所欲地决定价格。

企业获得经济利润则一定获得正常利润。

形成垄断竞争市场最基本的条件是( )

最需要进行广告宣传的市场是( )

一个垄断竞争的市场结构,必须具备的条件是( )

垄断竞争市场就是指产品没有差别的市场。

产品有差别就不会有完全竞争。

在一般情况下,厂商得到的价格若低于以下哪种成本就停止营业( )

寡头垄断的一个显著特征是( )

按竞争与垄断的程度,我们将市场分为( )

由于寡头之间可以进行勾结,所以他们之间并不存在竞争。

垄断行业由于有规模经济存在,可以比竞争行业产量更高,价格更低。

下列哪些岩石不属于沉积岩?

集料的力学性质有哪些?

变质岩是原生的岩浆岩和沉积岩经过地质上的变质作用而形成的岩石。

粗集料是指粒径大于____mm的碎石、破碎砾石、筛选砾石及矿渣等。

玄武岩属于____。(岩石类型)

下列不属于按技术特性分类的水泥是哪个?

下列属于无机胶凝材料的有哪些?

水硬性胶凝材料只能在水中硬化,不能在空气中硬化。

石灰的硬化过程包括____和碳酸化两部分。

普通硅酸盐水泥主要含有____和氧化硅,氧化铝和氧化铁。

石油沥青的组分包括油分、____和沥青质。

石油沥青的胶体结构包括哪些?

软化点常用来判断沥青的低温性能。

沥青的低温性能包括____、脆性和低温劲度等。

石油沥青四组分分析法各组分包括沥青质、芳香分、饱和分和____。

水泥混凝土强度的形成,内因不包括( )。

混凝土的变形,主要有( )。

单位用水量实际上决定了混凝土拌和物中水泥浆的数量。

____越大表示混凝土拌合物的流动性越大。

混凝土拌和物的施工和易性是一项综合技术性质,包括流动性、振实性、黏聚性、____等。

集料公称最大粒径为26.5mm或31.5mm的沥青混合料称为( )式沥青混合料。

按矿料级配组成及空隙率大小分类,沥青混合料可分为( )。

沥青混合料是矿料与沥青结合料经拌和而形成的混合料的总称。

毛体积密度是指沥青混合料单位____(含沥青混合料实体矿物成分体积、不吸收水分的闭口孔隙、能吸收水分的开口孔隙等颗粒表面轮廓所包围的全部毛体积)的干质量。

____是指沥青混合料在高温条件下,能够抵抗车辆荷载的反复作用,不发生显著永久变形,保证路面平整度的特性。

下列哪些岩石不属于沉积岩?

下列不属于按技术特性分类的水泥是哪个?

石油沥青的组分包括油分、____和沥青质。

水泥混凝土强度的形成,内因不包括( )。

集料公称最大粒径为26.5mm或31.5mm的沥青混合料称为( )式沥青混合料。

岩石按其成因可分为岩浆岩、()、变质岩三大类。

无机胶凝材料根据硬化条件不同,可分为()硬性胶凝材料和水硬性胶凝材料。

粘弹性物体在应力保持不变的情况下,应变随时间而增加的现象,称为( )。

乳化沥青主要有沥青、乳化剂、稳定剂和( )组成。

按照在自然界获得方式的不同,沥青可分为地沥青和( )。

集料的力学性质有哪些?

下列属于无机胶凝材料的有哪些?

石油沥青的胶体结构包括哪些?

混凝土的变形,主要有( )。

按矿料级配组成及空隙率大小分类,沥青混合料可分为( )。

沥青三组分分析法包括油分,胶质和沥青质。

石灰岩属于沉积岩。

立方体抗压强度标准试件尺寸为:150mm×150mm×300mm。

细粒式沥青混合料是指集料公称最大粒径为16mm的沥青混合料。

根据沥青混合料的矿料级配组成特点,沥青混合料可以分为:悬浮密实结构、____和骨架密实结构。

____是指沥青混凝土拌和物在自重或机械振动密实作用下能产生适当地流动并均匀密实地填满模板的性能。

混凝土在持续荷载作用下,随时间增长的变形称为徐变变形,也称为____。

集料是由不同粒径矿质颗粒组成,并在混合料中起骨架和填充作用的粒料。按粒径范围,可以分为粗集料、细集料和____。

石油沥青的三组分分析法又称为溶解—吸附法,是将石油沥青分离为油分、树脂和____。

下面的函数关系是( )

在回归分析中,以下说确的是( )

相关分析中,所分析的两变量都是随机变量

单纯依靠相关与回归分析,无法判断事物之间存在的因果关系

回归分析和相关关系是研究变量之间相关关系的两种基本方法,相关分析主要使用 来表明变量之间关系的密切程度,回归分析侧重考察变量之间的 变化规律,并通过 来描述变量之间的相互关系,其分析结果可以用于预测。

计算回归方程要求资料中的因变量是 的,而自变量是 的。

下面的函数关系是

两变量之间的相关关系是否存在,主要是由两者相关系数的大小决定的。

完全相关即是 关系。

1. 设最小二乘法得到的样本回归直线为,则点( ). a.一定不在回归直线上 b.一定在回归直线上 c.不一定在回归直线上 d.在回归直线上方

叙述相关分析与回归分析的异同点。

简述线性回归模型通常要研究的问题

在一元线性回归中,下面那一项不是最小二乘估计的性质( )

线性回归中普通最小二乘估计的缺点是( ).

回归系数的取值范围介于±1之间。

相关系数为0表明两个变量之间不存在任何关系

最小二乘法的理论依据是 。

用来说明回归方程代表性大小的统计分析指标是

回归系数和相关系数的符号是一致的,其符号均可用来判断现象( )

相关分析中,所分析的两变量都是随机变量。

回归分析和相关关系是研究变量之间相关关系的两种基本方法,相关分析主要使用 来表明变量之间关系的密切程度,回归分析侧重考察变量之间的 变化规律,并通过 来描述变量之间的相互关系,其分析结果可以用于预测。

简述高斯—马尔柯夫定理的内容及其意义

证明平方和分解式

在回归分析中,代表了数据点和它在回归直线上相应位置的差异的是( )

总体回归函数中的回归系数是常数,样本回归函数中的回归系数的估计量是随机变量。

在线性回归模型中,总偏差平方和、回归平方和、残差平方和的关系等式____________。

全模型正确而误用选模型的影响,下列说法错误的是

选模型正确而误用全模型,则选模型的预测是无偏的。

自变量选择方法有哪些____________.

简述自变量选择准则

当一个回归模型存在序列相关性时,不能使用

方差膨胀因子等于5时,自变量之间存在多重共线性。

d.w.值在____附近,模型不存在一阶自相关。

多重共线性的诊断方法有哪些?

下列不是岭参数选取方法的是

岭估计是无偏估计

在均方误差意义下,岭估计_________最小二乘估计。

简述岭参数的选取方法

对于非线性回归模型,下列说确的是

非线性回归模型的随机误差项为加性误差项时,模型可以线性化。

在___________________的假设下,模型的最大似然估计与最小二乘估计等价。

非线性回归模型的参数估计有哪些方法?

简述logistic回归模型的参数估计方法

下面的函数关系是( )

在回归直线y=a bx中,b表示( )

在回归分析中,代表了数据点和它在回归直线上相应位置的差异的是( )

估计标准误差是反映( )

非线性回归在应用多项式回归时,阶数一般不要超过多少阶?( )

回归系数的显著性检验就是要检验因变量y对自变量x的影响程度是否显著。

两变量之间的相关关系是否存在,主要是由两者相关系数的大小决定的。

正相关是指自变量朝正方向变动的相互关系。

相关分析中,所分析的两变量都是随机变量。

相关系数越大,两变量的相关程度越高。

相关系数的取值范围是 。

多重共线性诊断的方法主要有: 、 、__________。

、 还有 是建立回归模型时变量选择的常用方法。

在线性回归分析中,最小二乘估计的性质有______、_______、_______等。

如果两个变量的变动方向一致,同时呈上升或下降趋势, 则二者是______。

简述高斯—马尔柯夫定理的内容及其意义

举例说明产生异方差的原因及其后果.

岭回归的定义及统计思想是什么?

简述参数估计中极大似然估计与最小二乘估计的两点区别?

在线性相关的条件下,自变量的均方差为2,因变量均方差为5,而相关系数为0.8时,则其回归系数为:( )

估计标准误差是反映( )

年劳动生产率z(干元)和工人工资y=10 70x,这意味着年劳动生产率每提高1千元时,工人工资平均( )

当存在异方差时,如果用普通最小二乘法估计参数,将出现 参数向量的真实方差的情况,并将导致回归系数t检验值 。

设两个变量x和y之间具有线性相关关系,它们的相关系数是r,y关于x的回归直线的斜率是b,纵截距是a,那么必有

蛛网现象可能带来序列的异方差性

逐步回归中要求引入自变量的显著性水平大于剔除自变量的显著性水平

若dw统计量的值接近于4,则回归模型误差项存在正相关性

最常用的统计检验准则包括拟合优度检验、变量的显著性检验和方程的显著性验

等级相关系数法可以用作自相关的诊断

多重共线性诊断的方法主要有: 、 、__________。

用来说明回归方程代表性大小的统计分析指标是 。

如果发现散点图中所有的样本点都在一条直线上,则残差平方和等于 。

被解释变量的观测值与其回归估计值之间的偏差,称为__________。

平方和分解式是______________.

多重共线性对回归模型的影响是什么?

在两个变量的回归分析中,作散点图的目的是?

岭回归的定义及统计思想是什么?

为什么说最小二乘估计量是最有的线性无偏估计?多远线性回归最小二乘估计的正规方程组,能解出唯一的参数估计的条件是什么?
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