上海交通大学试卷(答案)
2022年上海交通大学环境科学与工程专业《环境监测》科目期末试卷A(有答案)

2022年上海交通大学环境科学与工程专业《环境监测》科目期末试卷A(有答案)一、填空题1、测定大气中二氧化硫的国家标准分析方法是______,为避免使用毒较大的吸收液,可选择______做吸收液。
2、硫化物是指水中溶解性无机硫化物和酸溶性金属硫化物,包括溶解性的______、______、______以及存在于悬浮物中的可溶性硫化物和酸可溶性金属硫化物。
3、采用索氏提取器提取环境样品中的有机污染物时,其优点是______,缺点是______;K-D浓缩器的优点是______。
4、波长、频率、周期、声速之间的关系为______。
5、遥感主要包括信息的采集、接收、______、______、______和应用等过程。
6、地面水环境质量标准依据地面水域的不同分为五级标准,下列水体各适用哪一级标准:神农架自然保护区:______;长江回游鱼类产卵区:______;麦田灌溉用水区:______;淡水浴场:______。
7、土壤是由______、______、______三相物质构成的复杂体系。
8、环境样品预处理的目的是______,预处理的方法有______和______。
二、判断题9、采集有组织排放污染物时,采样点位应设在弯头、阀门等下游方向不小于6倍直径,和距上述部件上游方向不小于3倍直径处。
()10、一次污染物是指直接从各种污染源排放到大气中的有害物质。
而二次污染物是一次污染物在大气中经转化后形成的物质,因此二次污染物的毒性要比一次污染物的毒性小。
()11、对大气固定污染源进行监测时要求生产设备处于正常运转状态下。
()12、使用高氯酸消解时,可直接向有机物的热溶液中加入高氯酸,但须小心。
()13、总铬测定时,用NO2-还原KMnO4,然后再用CO(NH2)2还原过量NO2-。
()14、挥发酚是指沸点低于100℃的酚类化合物。
()[扬州大学2014 年研]15、所有的声音都是由于物体的振动引起的。
()16、测定固体废物的pH值时,将各点采集的样品分别测定,然后以平均值表示。
上海交通大学英语水平考试样题及答案

上海交通大学英语水平考试样题Part II Integrated Reading (30%)Section 1 Banked Cloze (10%)Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passagethrough carefully before making your choices. You may not use any of the words in the bankmore than once. Give your answers to the questions on your ANSWER SHEET.Attention:You need to change the forms of the words in the word bank where necessary.(注意:请把答案写在答题卷上,否则以零分处理)A name might tell you something about a person's background. Names can be1) __________ of class and race. Data show African Americans are far more likely than other 2) __________ groups to give their children uncommon names. White people tend to 3) ________ more familiar names that were formerly popular with more affluent white people.The new study purports to show a link between name and outcome of life: The more 4) _________ your name, the more likely you are to land in juvenile hall. That's because we know that boys with uncommon names are more likely to come from a socio-economically 5) _________ background, which means that they also are more likely to get involved with crime. Even the researchers readily admit that it's not a name alone that 6)_______ a child's outcome, but rather the circumstance underlying the name.The researchers first assigned a popularity score to boys' names, based on how often they showed up in birth records in an undisclosed state from 1987 to 1991. Michael, the No. 1 boy's name, had a Popular Name Index score of 100; names such as Malcolm and Preston had index scores of 1. The researchers then assessed names of young men born during that time who landed in the juvenile justice system. They found that only half had a rating higher than 11. By 7) __________, in the general population, half of the names scored higher than 20. "A 10% increase in the popularity of a name is associated with a 3.7% 8) _________ in the number of juvenile delinquents who have that name."Still, the study theorizes that teenagers named Malcolm might also 9) ___________ because their peers treat them differently or they just don't like their names. And since the study's release last week, the name-crime 10) ___________ has been written or talked about in major media outlets.Section 2 True orFalse Judgement & Sentence Completion (10%)Directions:In this part, you will find 7 statements and 3 incomplete sentences followed by the reading passage.For questions 1-7, markY (for YES) if the statement agrees with the information given in the passage;N (for NO) if the statement contradicts the information given in the passage;For questions 8-10, complete the sentences with the information given in the passage.Attention: For questions 1-7, one more point will be deducted if you do n’t answereach one correctly.(注意: 1-7题中每答错一题倒扣1分, 不答不得分,答对得1分; 请把答案写在答题卷上,否则以零分处理)Who are smarter, men or women? It's a topic of common –– and often comic –– contemplation, but it has also become a serious policy issue for colleges and students in the United States.After years of concentrated effort to raise the academic achievement of girls, who in previous decades had often received less attention in the classroom and been steered away from college-prep courses, the nation can brag that female students have progressed tremendously. Though still underrepresented in calculus and other advanced-level science and math courses in high school, women now outnumber men applying to and graduating from college ––so much so that it appears some colleges are giving male applicants an admissions boost. As a result, the U.S. Commission on Civil Rights is examining whether colleges are engaging in widespread discrimination against women in an effort to balance their male and female populations.Consider some of the numbers at leading schools: At Vassar College in New York State, a formerly all-women's college that is still 60% female, more than two-thirds of the applicants last year were women. The college accepted 35% of the men who applied, compared with 20% of the women. Locally, elite Pomona College accepted 21% of male applicants for this year's freshman class, but only 13% of female applicants. At Virginia's College of William & Mary, 7,652 women applied for this year's freshman class, compared with 4,457 male applicants. Yet the numbers of each who gained admittance were nearly the same. That's because the college accepted 45% of the men and only 27% of the women.A 2007 analysis by U.S. News & World Report, based on the data sent by colleges for the magazine's annual rankings, found that the admissions rate for women averaged 13 percentage points lower than that for men. But percentages don't tell the whole story. It could be that the men were stronger candidates, or they might have applied in areas of engineering and science where women's numbers are still lower. But such justifications, even if true, are unlikely to fully explain these numbers. At schools such as the University of California, where admissions rely overwhelmingly on statistical measures of academic achievement such as grades and test scores, the disparities don't appear. Far more women than men applied to UCLA –– the UC's most selective campus –– last year. The university accepted about the same percentage of each, with a slight edge to the women. As a result, the freshman class has close to 800 more women than men.In recent years, several college leaders have admitted that their institutions give a boost to male applicants to maintain gender balance on campus. Most students of either sex, they point out, prefer suchbalance. If Vassar accepted equal percentages of each sex, women would outnumber men by more than 2 to 1.Jennifer Delahunty Britz, the dean of admissions at Kenyon College in Ohio, a formerly all-male school, brought the matter to broad public attention in 2006 with an Op-Ed article for the New York Times describing the dilemma of her admissions office. "What messages are we sending young women that they must . . . be even more accomplished than men to gain admission to the nation's top colleges?" New York Times has long favored allowing colleges to use race as an admissions factor in order to diversify student populations.She also wrote that exposure to people of different backgrounds and viewpoints better educates all students –– not just those given a leg up. We are not in favor of accepting underqualified or clearly inferior students for the sake of diversity. But most colleges are inundated with applications from students who more than meet their standards; the differences among many of them are slight. It makes sense for colleges to pick a balanced population from within this group. At the same time, admissions officers should avoid rigid notions of what constitutes enough men on campus. It's not harming UCLA, or destroying college social life, to admit somewhat more women than men.Even if the Civil Rights Commission finds pervasive gender discrimination in admissions, there's little it could do about the situation. Such discrimination ––though not racial discrimination ––is legal for undergraduate admissions at private, nonprofit colleges, even those that receive federal funding. Commission documents on the inquiry suggest that colleges could find more "gender-neutral" ways of balancing their student numbers, perhaps by offering programs and extracurricular activities that attract men.Those might work for some schools but won't change the overall scenario. Not with college populations composed of 57% women nationwide. The issue we'd like the Commission on Civil Rights to investigate is: What's happening with the education of U.S. boys? Why are so few of them applying to and graduating from college?Theories and arguments abound. Some say that boys are more active and thus less able to sit still for long periods ––and as a result, more likely to be categorized as having attention deficit / hyperactivity disorder or needing special education. A 2008 study by researchers at Northwestern University found that when girls are involved in a language-related task –– such as reading –– they show more activity in areas of the brain involved in encoding language. Boys use more sensory information to do linguistic tasks. The study suggests boys might do better if they were taught language and arts in different ways. Race is a factor as well. The gender gap is starker among African American and Latino students.There may be no one reason –– or solution. But figuring out ways to help boys achieve in school is abetter response to the gender gap than making it easier for them to get into college later.1. As a result of the effort to raise the academic achievement of the girls for years, the girls have exceeded boys tremendously in all courses in colleges except calculus and other advanced-level science and math courses.2. Female students are facing the low admission rate because some colleges are engaging in discrimination against women to achieve the balance of their male and female populations.3. Although the men were traditionally considered stronger candidates in areas of engineering and science, the admission rate for men in these areas is still lower than that for women.4. Women have outnumbered men in gaining admittance in UCLA’s freshman class this year because their admissions greatly rely on grades and test scores of their applicants.5. Some college leaders hold that most college students prefer their policy of maintaining gender balance by admitting equal percentages of each sex.6. The dilemma of the dean of admissions at Kenyon College is whether to use gender as an admissions factor in order to achieve gender balance or use race as an admissions factor in order to diversify student populations.7. According to Jennifer Delahunty Britz, it is reasonable for colleges to pick a balanced population from the candidates who more than meet their standards.8. Actually the Civil Rights Commission can do little to change the situation of discrimination in college admission because such discrimination is _____________.9. The study shows that in doing linguistic tasks the boys use more sensory information, the girls show more _____________.10. Despite various theories and arguments about why so few boys apply to and graduate from college, the better solution to the problem is to __________________________________.Section 3 Cloze (10%)Directions:In this section there are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D) on the right side of the paper. You should choose the ONE that best fits into the passage. Give your answers to the questions on your ANSWER SHEET.(注意:请把答案写在答题卷上,否则以零分处理)Part III Writing (30%)Section A (10%)In this Section,, you have 15 minutes to write an essay on the following topic. You should write at least 100 words. (请务必写在答题卷上,否则以零分处理)Your cousin, Ming Zhang, is going to take the national entrance examination to college in June. However, he is under great pressure and simply can’t concentrate on his study. Please drop him a note of about 100 words, giving him some tips as to how to deal with this situation.Section B (20%)In this Section, you have 30 minutes to write an essay on the following topic. You should write at least 200 words. (请务必写在答题卷上,否则以零分处理)Many college students complain of their heavy course load. They think some courses offered are time-consuming and not very useful. What do you think of the complaints? S hould college students’ opinions be considered in curriculum development and policy-making? Please write an essay of about 200 words to express your opinion and explain why with specific reasons.上海交通大学英语水平考试答题卷Part II Integrated Reading (30%)Section 1 Banked Cloze (10%)1) _________ 2) ___________ 3) ___________ 4)_______ 5)__________6) __________ 7) ____________ 8) ___________ 9)_________ 10) _________Section 2 True or False Judgement & Sentence Completion (10%) 1) _____ 2) _______ 3) _______ 4) ________ 5) _____ 6)_____ 7)_____8) _____________________________________________________________9) _____________________________________________________________10) ____________________________________________________________Part III Writing (30%) (请将作文写在答题卷背面) Section A (10%)Your cousin, Ming Zhang, is going to take the national entrance examination to college in June. However, he is under great pressure and simply can’t concentrate on his study. Please drop him a note of about 100 words, giving him some tips as to how to deal with this situation.Section B(10%)Key答案:Section 1: 1-5 CBBDC 6-10 ADACASection 2:1)Bandaged 2)triggered 3)probes 4)succession 5)principal 6)overlap 7)articulate 8) postdoctoral9)scientists have known for some time that conventional explanations for how parts of the brain work need to be revised10)there is a separation of tasks and a division of labor between two very different parts of the brain11)brain studies are shedding light on the pieces of the puzzle and might one day solve the mysterySection 3:1) I t’s basically the ability to c ommunicate successfully with people of other cultures. (2 points)2) Sensitivity to other cultures (1 point)3) Showing the bottom of your shoe or foot when crossing your legs (2 points)4) She did not remove her gloves when shaking hands with a business associate in Russia ( without realising that this isconsidered impolite). (2 points)5) Never make false assumptions about other cultures, and never lack sensitivity. Be open to learning about new cultures.And learn the local language. (3 points)Section 4:1) 全球经济的衰退对妇女和女孩所产生的影响尤其严重,这进而又波及到家庭、社区、乃至地区。
2022年上海交通大学专业课《金融学》科目期末试卷A(有答案)

2022年上海交通大学专业课《金融学》科目期末试卷A(有答案)一、选择题1、一国物价水平普遍上升,将会导致国际收支,该国的货币汇率。
()A.顺差:上升B.顺差;下降C.逆差;上升D.逆差;下降2、假设一张票据面额为80000元,90天到期,月贴现率为5%。
,则该张票据的实付贴现额为()A.68000B.78000C.78800D.800003、某公司以延期付款方式销售给某商场一批商品,该商场到期偿还欠款时,货币执行的是()职能。
A.流通手段B.支付手段C.购买手段D.贮藏手段4、中央银行进行公开市场业务操作的工具主要是()。
A.大额可转让存款单B.银行承兑汇票C.金融债券D.国库券5、下列不属于长期融资工具的是()。
A.公司债券B.政府债券C.股票D.银行票据6、10.如果复利的计息次数增加,则现值()A.不变B.增大C.减小D.不确定7、期权的最大特征是()。
A.风险与收益的对称性B.期权的卖方有执行或放弃执行期权的选择权C.风险与收益的不对称性D.必须每日计算益亏,到期之前会发生现金流动8、剑桥方程式重视的是货币的()。
A.媒介功能B.交易功能C.避险功能D.资产功能9、10.如果复利的计息次数增加,则现值()A.不变B.增大C.减小D.不确定10、以下的金融资产中不具有与期权类似的特征的是()。
A.可转债B.信用期权C.可召回债券D. 期货11、L公司刚支付了2.25元的股利,并预计股利会以5%每年的速度增长,该公司的风险水平对应的折现率为11%,该公司的股价应与以下哪个数值最接近?()A.20.45元B.21.48元C.37.50元D.39.38元12、下列属于直接金融工具的是()。
A.企业债券B.银行债券C.银行抵押贷款D.大额可转让定期存单13、公司将一张面额为10000元,3个月后到期的商业票据变现,若银行年贴现率为5%,应付金额为()。
A.125B.150C.9875D.980014、()最能体现中央银行是“银行的银行”。
2022年上海交通大学生物科学专业《微生物学》期末试卷A(有答案)

2022年上海交通大学生物科学专业《微生物学》期末试卷A(有答案)一、填空题1、用孔雀绿和复红作细菌芽孢染色时,可使菌体呈______色,使芽孢呈______色。
2、烟草花叶病毒简称______,外形______状,外层衣壳粒以______时,针方向螺旋状排列成______,具有______功能;核心为______链______。
3、至今采用严格厌氧菌进行大规模发酵的产品只有______一种,其产生菌是______。
4、在液体培养基中,放线菌常以______的方式繁殖,工业上的______ 就是利用这一方式进行增殖的。
5、酵母菌的无性孢子有______、______和______等数种。
6、被誉为微生物学奠基人的是______世纪、______国的______;而细菌学的奠基人则为______国的______。
7、许多因素会影响加压蒸气灭菌的效果,主要有:① ______,② ______,③ ______,④______,以及⑤ ______等。
8、微生物寄生于其他微生物的例子如______、______;微生物寄生于植物的例子如______;微生物寄生于动物的例子如______。
9、当细菌处于一种氨基酸全面匮乏的“氨基酸饥饿”状态时,细菌会采取一种应急反应以求生存,实施这一应急反应的信号,大量合成两种物质,它们是:______和______。
10、体液免疫分子主要包括______、______和______;而______和______分别是非特异免疫和特异免疫的主要体液成分。
二、判断题11、苏云金芽孢杆菌的杀虫机制主要是靠其芽孢和伴胞晶体。
()12、在EMB培养基中,伊红美蓝的作用是促进大肠杆菌的生长。
()13、硫细菌、铁细菌和硝化细菌等化能自养菌不能通过Calvin循环进行CO2的固定。
()14、噬菌体因为是细菌的病毒,所以不可以通过细菌滤器。
()15、在真菌中,高尔基体并不是普遍存在的细胞器。
2022年上海交通大学计算机科学与技术专业《数据库原理》科目期末试卷B(有答案)

2022年上海交通大学计算机科学与技术专业《数据库原理》科目期末试卷B(有答案)一、填空题1、数据库恢复是将数据库从______状态恢复到______的功能。
2、设某数据库中有商品表(商品号,商品名,商品类别,价格)。
现要创建一个视图,该视图包含全部商品类别及每类商品的平均价格。
请补全如下语句: CREATE VIEW V1(商品类别,平均价格)AS SELECT商品类别,_____FROM商品表GROUP BY商品类别;3、有两种基本类型的锁,它们是______和______。
4、数据库管理系统的主要功能有______________、______________、数据库的运行管理以及数据库的建立和维护等4个方面。
5、____________、____________、____________和是计算机系统中的三类安全性。
6、若事务T对数据对象A加了S锁,则其他事务只能对数据A再加______,不能加______,直到事务T释放A上的锁。
7、在SELECT命令中进行查询,若希望查询的结果不出现重复元组,应在SEL ECT语句中使用______保留字。
8、关系规范化的目的是______。
9、事务故障、系统故障的恢复是由______完成的,介质故障是由______完成的。
10、DBMS的完整性控制机制应具备三个功能:定义功能,即______;检查功能,即______;最后若发现用户的操作请求使数据违背了完整性约束条件,则采取一定的动作来保证数据的完整性。
二、判断题11、数据模型的核心构成要素是数据结构。
()12、概念模型是对现实世界的第二层抽象。
()13、在关系模式中,主码和候选码可以有多个。
()14、视图是观察数据的一种方法,只能基于基本表建立。
()15、在数据库恢复中,对已完成的事务进行撤销处理。
()16、视图就是一个虚表,保存视图时,保存的是视图的定义。
()17、视图是可以更新的。
()18、在SQL中,ALTERTABLE语句中MODIFY用于修改字段的类型和长度等,ADD用于添加新的字段。
2022年上海交通大学强基校测数学试题及参考答案

2022年上海交通大学强基校测数学试题及参考答案1.等比数列{}n a ,31-=a ,8736=S S ,=∞→n n S lim ()A .不存在B.32 C.32-D.2-2.集合{}t A ,2,1=,{}A a aB ∈=2,B A C =,C 中元素和为6,则元素积为()A .1 B.1- C.8D.8-3.z y x ,,为正整数,求xzyz xy z y x ++++2221010的最小值为.4.直线14=+y kx 垂直⎩⎨⎧+=-=ty tx 4132(t 为参数),k 值为()A .3B.3- C.31 D.31-5.()()06cos >⎪⎭⎫ ⎝⎛-=ωπωx x f ,()⎪⎭⎫⎝⎛≤4πf x f 对R x ∈∀恒成立,则ω的最小值为()A .23B.1C.31 D.326.椭圆C :144222=+b y x ,B A P ,,在椭圆C 上,AP k ,BP k 为相反数(k 与k -),则AB k 与()A .k b ,有关,与P 点无关B.P 点,k b ,有关C.k P ,有关,与b 无关D.b P ,有关,与k 无关7.03cos 3cos 2=--θρθρ表示()A .一个圆B.一个圆与一条直线C.两个圆D.两条线8.1===c a b ,21=⋅b a ,则()()c b b a-+2的最小值为()A .33+ B.33- C.22+ D.22-9.()551051x a x a a x +++=- ,求()()53112a a a a a +++的值.10.正四面体装水到高度的21,问倒置后高度至何处.11.使()()()03cos 3sin 333=-+--+-x k x x x 有唯一解得k 有()A .不存在B.1个C.2个D.无穷多个12.两个圆柱底面积21S S ,,体积21V V ,,侧面积相等,2321=V V ,求21S S的值.13.双曲线112422=-y x ,焦点为B A ,,点C 在双曲线上,53cos =∠ACB ,求ABC ∆周长.14.{}100,21 ,,=A ,{}A x x B ∈=3,{}A x x C ∈=2,求CB 中元素的个数.15.()()()0ln 22122>++-=a x x a ax x f 在⎪⎭⎫⎝⎛121,中有极大值,则a 的取值范围为()A .()2,1 B.()∞+,1 C.()∞+,2 D.⎪⎭⎫ ⎝⎛+∞,1e16.☉1O ,☉2O 与kx y =,x 轴正半轴均相切,221=r r ,交点()22,P ,则=k ()A .1B.34C.43 D.2117.偶函数()x f 满足()()()224f x f x f +=+,求()2022f .18.()22022sin x x =π实根个数为.19.求方程6cos sin π=+x x 的根为.20.21F F ,为双曲线两焦点(焦点在x 轴),直线AB 经过1F 且与双曲线左右两支交于点A ,B ,︒=∠=1202211AF F AB AF ,,求双曲线的离心率.21.()21--++=x x x x f ,()()01=+x f f 根的个数为()A .1 B.2 C.3 D.022.ABC ∆,M 为平面上一点,AC AB AM 4132+=,=∆∆BCM ABM S S ()A .3 B.8C.38D.8323.已知集合(){}Z y Z x y x y x A ∈∈≤+=,,2,22,则A 中元素的个数为()A .4 B.5 C.8 D.924.=︒+︒15sin 2215tan ()A .3 B.2C.2D.125.空间中到正方体1111D C B A ABCD -棱11D A ,AB ,1CC 距离相等的点有()A .无数B.0C.2D.326.0>>b a ,则ba b a a -+++14的最小值为()A .32 B.2103 C.23 D.427.多项式()()x g x f ,,问两命题“()x f 是()x g 因式”,“()()x f f 是()()x g g 因式”充分必要条件.28.等势集合指两个集合间一一对应,下列为等势集合的是()A .[]1,0与{}10≤≤E E B.[]1,0与{}d c b a ,,,C.()1,0与[]1,0 D.{}3,21,与与{}d c b a ,,,29.()()121ln 2+-+-=x m mx x x f ,对0>∀x ,()0≤x f ,求整数m 的最小值.30.数列{}n a ,22621221=+-==++n n n a a a a a ,,,求∑=202211i ia .31.椭圆()319222>=+a y a x ,弦AB 中垂线过⎪⎭⎫⎝⎛-0,5a ,离心率e 的取值范围.32.椭圆1422=+y x 的焦点21F F ,,点P 在03432=-+y x 上,当21PF F ∠最大时,则=21PF PF ()A .315 B.53 C.35 D.51533.ABC ∆中,C B A 93==,=++A C C B B A cos cos cos cos cos cos ()A .41 B.41-C.31 D.31-34.8个点将半圆分成9段弧,以10个点(包括2个端点)为顶点的三角形中钝角三角形有()个.A .55 B.112 C.156D.12035.410=a ,n n n a a a +=+21,求⎦⎤⎢⎣⎡+∑=2022011i i a 的值.36.()xx x x f 312+++=的反函数为()x g ,()()122=xg 的根有()个.A .1B.2C.3D.437.()2235lim2=---→x x f x ,()33=f ,()x f 在()()33f ,处切线方程为()A .092=++y x B.092=-+y x C.092=++-y x D.092=-+-y x参考答案1.D 解析:∵等比数列{}n a ,31-=a ,8736=S S ,∴871136=--q q ,解得21-=q ,∴()⎪⎭⎫⎝⎛--⎥⎥⎦⎤⎢⎢⎣⎡⎪⎭⎫ ⎝⎛---=2112113n n S ,∴2lim -=∞→nn S .2.D解析:∵{}t A ,2,1=,{}A a aB ∈=2,∴B ∈1,B ∈4,B t ∈2,∴C ∈1,C ∈4,C t ∈2,若12=t ,则1=t (舍去)或1-=t ,此时{}1421-=,,,C ,符合题意,∴C 中的元素的积为()81421-=-⨯⨯⨯,若22=t ,则2=t 或2-=t ,此时{}24,2,1,=C 或{}24,2,1-=,C ,与已知C 中的元素和为6不符,若t t =2,则0=t 或1=t (舍去),此时{}0421,,,=C ,也与已知C 中的元素和为6不符,若t t ,2,12≠,则{}2421t t C ,,,,=,则64212=++++tt ,即012=++t t ,方程无解,综上,C 中元素积为8-.3.解:引入参数k 值,使之满足()()21021010102222222222z y k z z k ky kx z y x +-++-++=++()()xz yz k kxy +⋅-+≥1022,依据取等号的条件,有()t k k =-=1022,整理得4=t ,故xzyz xy z y x ++++2221010的最小值为4.4.B解析:⎩⎨⎧+=-=ty tx 4132(t 为参数),消去参数t 可得,01134=-+y x ,∵直线14=+y kx 垂直⎩⎨⎧+=-=ty t x 4132,∴1344-=⎪⎭⎫⎝⎛-⨯-k ,解得3-=k .5.D解析:由题意可得()x f 的最大值为⎪⎭⎫⎝⎛4πf ,且为1,则Z k k ∈=-,ππωπ264,解得Z k k ∈+=,328ω,由0>ω,可得0=k 时,ω的最小值为32.6.D解析:设()n m P ,,则直线P A 的方程为()m x k n y -=-,()⎪⎩⎪⎨⎧+-==+n m x k y by x 144222,消去y 得()()0422222222222=-+-+-++b n mkn m k x mk nk x k b,∴22222k b mk nk x m A +--=+,∴m k b mk nk x A -+--=22222,n m k b mk nk k y A +⎪⎪⎭⎫ ⎝⎛-+--=222222,同理可得:m k b mk nk x B -++=22222,n m k b mk nk k y B +⎪⎪⎭⎫ ⎝⎛-++-=222222,nmb x x y y k B A B A AB22=--=.7.B解析:∵03cos 3cos 2=--θρθρ,∴()()01cos 3=+-θρρ,解得3=ρ或1cos -=θρ,∵θρρcos 222=+=x y x ,,∴1922-==+x y x ,或,∴03cos 3cos 2=--θρθρ表示一个圆或一条直线.8.B 解析:∵1===c a b ,21=⋅b a ,可设()⎪⎪⎭⎫ ⎝⎛==23,210,1a b ,,()[)πααα2,0sin ,cos ∈=,c,∴()()⎪⎭⎫ ⎝⎛+-=--=-+3sin 33sin 23cos 2332παααc b b a ,∴当13sin =⎪⎭⎫ ⎝⎛+πα时,()()c b b a -+2的最小值为33-.9.解:当0=x 时,10=a ;当1=x 时,0543210=+++++a a a a a a ;当1-=x 时,32543210=-+-+-a a a a a a ,以上两式相减得,32222531-=++a a a ,则16531-=++a a a ,又根据二项展开式可得,5151-=-=C a ,10252==C a ,则521=+a a ,则()()8053112-=+++a a a a a .10.解:设正四面体的底面积为S ,高为h ,体积为Sh V 31=,正四面体装水到高度的21,则上面无水部分也为正四面体,底面积为S 41,高为h 21,体积为V h S 81214131=⋅⋅,倒置后,下面正四面体的体积是V 87,即有水部分的体积与原正四面体的体积比为8787=V V,∴倒置后高度至原正四面体的273.11.B 解析:令t x =-3,则0cos sin 3=++t k t t t,设()t k t t t f tcos sin 3++=()R t ∈,则()()()=-+--=--t k t t t f tcos sin 3()t f t k t t t=++cos sin 3,∴()t f 为偶函数,则函数()t f 的图象关于y 轴对称,由偶函数的对称性,若()0=t f 的零点不为0=t ,则有()01=t f ,必有()01=-t f ,不满足()0=t f 的唯一性,∴只能是()00=f ,即00cos 03=++k ,解得1-=k ,故k 只有唯一一个.12.解:设两圆柱的底面半径为21,r r ,高为21,h h ,由题意可得:221122h r h r ππ=,即1221h h r r =,且232112222122212121==⨯==r r r r r r h r h r V V ππππ,从而49222121==r r S S ππ.13.解:双曲线112422=-y x ,可得42==c a ,,()()0404,,,B A -,不妨设C 在第一象限,由双曲线的定义可知42==-a CB AC ,可得16222=-+BC AC BC AC,53cos =∠ACB ,由余弦定理可得ACB BC AC BC AC AB ∠-+=cos 2222,即5326422⨯-+=BC AC BC AC ,解得10=AC ,6=BC ,8=AB ,则ABC ∆的周长为24.14.解:由题意可知,集合B 中的元素为300以内3的倍数,集合C 中的元素为200以内2的倍数,∴C B 中元素为200以内6的倍数,∴元素共有336200≈,即C B 中共有33个元素.15.A 解析:由题得()()xa ax x f 221++-=',∵()()()0ln 22122>++-=a x x a ax x f 在⎪⎭⎫⎝⎛121,中有极大值,∴方程()()0221=++-='x a ax x f 在⎪⎭⎫⎝⎛121,内有解,∴x a 1=在区间⎪⎭⎫⎝⎛121,有解,故()2,11∈=x a ,则a 的取值范围为()2,1.16.B 解析:如图,☉1O ,☉2O 均与kx y =相切,则两圆交点()2,2P 在直线kx y =的右下方,而OP 所在直线的侠侣为1,可得1>k ,综合选项可知,34=k .17.解:由偶函数()x f 满足()()()224f x f x f +=+,令2-=x ,则()()()2222f f f +-=,即()()022=-+f f ,又()()22f f =-,可得()02=f ,∴()()x f x f =+4,即()x f 的最小正周期为4,∴()()()022********==+⨯=f f f .18.4044解析:设()()()22022sin x x g x x f ==,π,∴()()111==-g g ,1>x 或1-<x 时,()1>x g ,()1≤x f ,两者无交点,∴()()x x f π2022sin =的周期为1011120222==ππT ,在[]1,0上有1011个周期,在[)0,1-上有1011个周期,()()02022sin 1=-=-πf ,()()02022sin 1==πf ,1-=x 在()x f 增区间上,1=x 在()x f 减区间上,因此在[]1,1-上的每个区间⎥⎦⎤⎢⎣⎡++-+-101111,10111k k ()2021,*≤∈k N k 上,()x f 与()x g 的图象都是两个交点,共4044个交点,即原方程有4044个解.19.无实数解解析:∵方程6cos sin π=+x x ,两边平方可得:36cos sin 2cos sin 222π=++x x x x ,∴362sin 12π=+x ,∴01362sin 2<-=πx ,因此方程无实数解.20.解:如图,∵︒=∠=1202211AF F AB AF ,,设x AB AF 221==,则a x BF x a AF 23222-=+=,,且︒=∠602BAF ,∴在2ABF ∆中,22222BF AB AF +=,可得()()()()︒⋅+⋅⋅-++=-60cos 2222223222x a x x a x a x ,……①在21F AF ∆中,2221221AF AF F F +=,可得()()()︒⋅+⋅⋅-++=120cos 2222222x a x x a x c ,……②可得:a x 2=且ax a x c 6434222++=,代入可得a c 7=,故离心率7=e .21.C 解析:当1-≤x 时,()()()321--=-+-+-=x x x x x f ,当01<<-x 时,()()121-=-+-+=x x x x x f ,当20≤≤x 时,()()1321-=-+++=x x x x x f ,当2>x 时,()()321+=--++=x x x x x f ,作出()x f 的图象如图:设()x f t =,由()01=+t f ,得()1-=t f ,得0=t 或2-=t ,当0=t 时,()0=x f ,有两个根;当2-=t 时,()2-=x f ,有1个根;综上,()()01=+x f f 根的个数为3个22.A 解析:如图,延长AM 交BC 于G ,则()AC AB AG λλ-+=1,∵G M A ,,三点共线,∴AM t AG =,即()⎪⎭⎫⎝⎛+=-+AC AB t AC AB 41321λλ,∴41321=-λλ,则381=-λλ,故118=λ且1112=t ,又CB CG λ=,故CB CG 118=,∴83=CG BG ,121=GA GM ,∴ABM ABM BGM BMC S S S S ∆∆∆∆=⨯==31111311311,∴=∆∆BCM ABM S S 3.23.D 解析:根据题意:()()()()()()()()()(){}1,1,0,1,1,1,1,0,0,0,1,0,1,1,0,1,1,1,------=y x A 共9个元素,是平面直角坐标系中9个点.24.D 解析:原式()()1426223313313045sin 223045tan =-⨯++-=︒-︒+︒-︒=.25.A 解析:在正方体1111D C B A ABCD -上建立如图所示的空间直角坐标系,设该正方体的棱长为1,连接D B 1,并在D B 1上任取一点P ,∵()111,,=DB ,∴()a a a P ,,,其中10≤≤a ,作PE ⊥平面D D AA 11,垂足为E ,再作11D A EF ⊥,垂足为F ,则PF 是点P 到直线11D A 的距离,∴()221a a PF -+=,同理点P 到直线1CC AB 、的距离也是()221a a -+,∴D B 1上任一点与正方体1111D C B A ABCD -的三条棱11D A ,AB ,1CC 所在直线的距离都相等,∴与棱11D A ,AB ,1CC 距离相等的点有无数个.26.C 解析:∵0>>b a ,则ba b a b a b a b a b a a -+-++++=-+++12421423122422=-⋅-++⋅+≥ba b a b a b a ,当且仅当⎪⎩⎪⎨⎧=-=+222b a b a ,即22333==b a ,时取等号.27.解:不充分反例:设()()()11-=-=x x x g x x f ,,故()()2-=x x f f ,()()()()112---=x x x x x g g ,故不充分,不必要反例:设()()()121-=+=x x xg x x f ,,故()()1+=x x f f ,()()()()112+++=x x x x x g g ,故不必要.∴“()x f 是()x g 因式”是“()()x f f 是()()x g g 因式”的既不充分又不必要条件.28.A 解析:根据等势集合的定义可判断选项A 正确.29.解:当0=m 时,()1ln ++=x x x f ,此时()01>f 不合题意,当1=m 时,()1ln 2+--=x x x x f ,()()()xx x x x x x x x f --+=--+=--='121121212∴当210<<x 时,()0>'x f ,()x f 单调递增;当21>x 时,()0<'x f ,()x f 单调递减.函数的最大值为016ln ln 1214121ln 2144<-=+--=⎪⎭⎫⎝⎛e f ,即1=m 满足题意,下面证明当1≥m 时,()0≤x f 对0>x 恒成立,由于()()()()x m mx x m mx x x f 21121122-+-=+-+--≤,其对称轴为0121221<-=-=mm m x ,故当0>x 时,()0<x f ,综上可得,整数m 的最小值为1.30.解:∵2212=+-++n n n a a a ,∴()()2112=---+++n n n n a a a a ,设n n n a a b -=+1,则21=-+n n b b ,且426121=-=-=a a b ,∴数列{}n b 是首项为4,公差为2的等差数列,∴()()12214+=⨯-+=n n b n ,即()121+=-+n a a n n ,∴()()()112211a a a a a a a a n n n n n +-++-+-=--- ()()226122+-++-+= n n ()[]()()12121212+=⨯+⨯=+++-+=n n n n n n ,∴()111111+-=+=n n n n a n ,∴2023202220231120231202213121211120221=-=⎪⎭⎫ ⎝⎛-++⎪⎭⎫ ⎝⎛-+⎪⎭⎫ ⎝⎛-=∑= i ia .31.解:设()()2211,,y x B y x A ,,21x x ≠,令92=b ,则⎪⎪⎪⎪⎩⎪⎪⎪⎪⎨⎧=+=++⎪⎭⎫ ⎝⎛+=+⎪⎭⎫ ⎝⎛+115522222222122122222121b y a x b y a x y a x y a x ,即()⎪⎪⎪⎩⎪⎪⎪⎨⎧-=-=-=-+-22222222122221122221222152x a b b y x a b b y x x a y y x x ,∴()()⎪⎪⎭⎫ ⎝⎛--=-22222112152a b x x x x a,∴()2232152a b a x x -=+,∵a x a ≤≤-1,a x a ≤≤-2,∴a x x a 2221<+<-,则()a ab a 252223->-,即5422<a b ,∴511222>-=ab e ,又10<<e ,∴155<<e ,即离心率e 的取值范围为⎪⎪⎭⎫ ⎝⎛155,.32.A 解析:由题意可得()0,32F ,且直线03432=-+y x 与x 轴的交点()0,34B ,由平面几何知识可得:当过1F 与2F 的圆与直线03432=-+y x 相切时,切点P 满足21PF F ∠最大,此时圆心A 在y 轴上,设()t A ,0,则圆的半径2AF AP r ==,又P BF APF 12∠=∠,∴P BF BPF 12~∆∆,∴()2222222221BF AF AB BF AP AB BF PBPF PF -=-==()()31533533343342222==---+=bb .33.B 解析:∵在ABC ∆中,C B A 93==,∴13π=C ,∴AC C B B A cos cos cos cos cos cos ++()()()()()()[]C A C A C B B C B A B A -+++-+++-++=cos cos cos cos cos cos 21()C C C C C C 12cos 10cos 8cos 6cos 4cos 2cos 21+++++=⎪⎭⎫⎝⎛+++++=13121310cos 138cos 136cos 134cos 132cos 21ππππππ又⎪⎭⎫ ⎝⎛-=13sin 133sin 21132cos 13sinππππ;⎪⎭⎫⎝⎛-=133sin 135sin 21134cos 13sin ππππ;⎪⎭⎫ ⎝⎛-=135sin 137sin 21136cos 13sinππππ;⎪⎭⎫ ⎝⎛-=137sin 139sin 21138cos 13sin ππππ;⎪⎭⎫ ⎝⎛-=139sin 1311sin 211310cos 13sinππππ;⎪⎭⎫⎝⎛-=1311sin 1313sin 211312cos 13sin ππππ;上述各式相加得:211312cos 1310cos 138cos 136cos 134cos 132cos-=+++++ππππππ.34.B 解析:根据题意,如图:在10个点中,任意三点不共线,在其中任意3个点,可以组成120310=C 个三角形,其中没有锐角三角形,直角三角形有8个,(包含AB 两点在内个三角形),则钝角三角形有120-8=112个.35.解:∵()121+=+=+n n n n n a a a a a ,∴()1111111+-=+=+n n n n n a a a a a ,即n n n a a a 11111+-=++,∴111111112022102022++++++=+∑=a a a ai i ⎪⎪⎭⎫ ⎝⎛+-++⎪⎪⎭⎫ ⎝⎛+-+⎪⎪⎭⎫ ⎝⎛+-=202220231201111111a a a a a a 2023202301411a a a -=-=,∵n n n n a a a a >+=+21,∴n n a a 111<+,且15>a ,∴12023>a ,∴1102023<<a ∴31411202320220=⎥⎦⎤⎢⎣⎡-=⎦⎤⎢⎣⎡+∑=a a i i .36.D 解析:∵()()122=x g ,∴()12±=x g ,当()12=xg 时,()731211=+++=f ,令72=x ,解得7±=x ;当()12-=x g 时,()31312111=++-=--f ,令312=x ,解得33±=x ;∴方程()()122=xg 的根有4个.37.B 解析:∵()2235lim2=---→x x f x ,()33=f ,令2-=∆x x ,∴()()()()()2333lim 33lim 00='-=∆--∆--=∆-∆-→∆→∆f xf x f x f x f x x ,解得()23-='f ,∴()x f 在()()33f ,处切线方程为()323--=-x y ,即092=-+y x .。
上海交通大学高等数学期末考试试卷(含答案)

上海交通大学高等数学期末考试试卷(含答案)
一、高等数学选择题
1.由曲线,直线,轴及所围成的平面图形的面积为.
A、正确
B、不正确
【答案】A
2.设函数,则.
A、正确
B、不正确
【答案】B
3.设函数,则().
A、
B、
C、
D、
【答案】D
4.().
A、
B、
C、
D、
【答案】B
5.曲线在点处切线的方程为().
A、
B、
C、
D、
【答案】C
6.微分方程的通解是().
A、
B、
C、
D、
【答案】B
7.设函数,,则函数.
A、正确
B、不正确
【答案】A
8.函数的图形如图示,则函数的单调减少区间为
( ).
A、
B、
C、
D、
【答案】D
9.极限().
A、
B、
C、
D、
【答案】C
10.设,则微分.
A、正确
B、不正确
【答案】B
二、二选择题
11.().
A、
B、
C、
D、
【答案】C
12.设函数,则导数.
A、正确
B、不正确
【答案】B
13.函数在点处连续.
A、正确
B、不正确
【答案】A
14.设,则.
A、正确
B、不正确
【答案】B
15.是偶函数.
A、正确
B、不正确
【答案】A。
2021年上海交通大学计算机科学与技术专业《计算机组成原理》科目期末试卷A(有答案)

2021年上海交通大学计算机科学与技术专业《计算机组成原理》科目期末试卷A(有答案)一、选择题1、某计算机按字节编址,指令字长固定且只有两种指令格式,其中三地址指令29条,二地址指令107条,每个地址字段为6位,则指令字长至少应该是()。
A.24位B.26位C.28位D.32位2、一般来说,变址寻址经常和其他寻址方式混合在起使用,设变址寄存器为X,形式地址为D,某机具有先间址寻址再变址寻址的方式,则这种寻址方式的有效地址为()。
A.EA=D+(IX)B.EA=(D)+(IX)C.EA=(D+(IX))D.EA=D+IX3、假设机器字长为8位(含两位符号位),若机器数DA日为补码,则算术左移一位和算术右移一位分别得()。
A.B4H EDHB.F4H 6DHC.B5H EDHD.B4H 6DH4、float类型(即IEEE754标准中的单精度浮点数格式)能表示的最大整数是()。
A.2126-2103B.2127-2104C.2127-2105D.2128-21045、假设机器字长为16位,用定点补码小数表示时,一个字所能表示的范围是()。
A.0~(1-2-15)B.-(1-2-15)~(1-2-15)C.-1~1D.-1~(1-2-15)6、若数据在存储器中采用以低字节地址为字地址的存放方式(小端存储),则十六进制数12345678H按自己地址由小到大依次存为()。
A.12345678B.87654321C.78563412D.341278567、地址线A15~A0(低),若选取用16K×1位存储芯片构成64KB存储器,则应由地址码()译码产生片选信号。
A.A15,A14B.A0,AlC.A14,A13D.A1,A28、某计算机主频为1.2GHz,其指令分为4类,它们在基准程序中所占比例及CPI如下表所示。
该机的MIPS数是()。
A.100B.200C.400D.6009、下列选项中,能缩短程序执行时间的措施是()。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
上海交通大学试卷(答案)
(2018至2019学年第2学期)
课程名称概率论(MS107)
第1题:[10分]
以下两题任选一题解答:
(1)箱子中有20个白球和30个黑球。
球被一个个取出直到箱子中只剩下同样颜色的球为止。
试计算剩下
的球全为白球的概率。
(2)一个罐子中有10个黑球和12个白球。
每次从罐子中等概率挑出一个球,再放回两个与之同色的球。
试说明前七次挑球看到颜色序列为(白白黑白白黑白)的概率与看到(黑黑白白白白白)的概率一致。
第2题:[10分]
以下两题任选一题解答:
(i)设Y1,...,Y n为一列独立同分布存在期望的随机变量。
令X1=Y1+···+Y n
n ,X2=Y1+···+Y n−1
n−1
,...,
X n−1=Y1+Y2
2
,X n=Y1。
试说明X1,X2,...,X n是一个鞅序列。
(ii)一个罐子中有10个黑球和12个白球。
每次从罐子中等概率挑出一个球,再放回九个与之同色的球。
令X n表示第n次取放球操作后罐子中黑球所占比例。
试说明(X n)是一个鞅序列。
第3题:[10分]
设A 为自然数集合的一个子集,且lim n →∞|A ∩{1,...,n }|
n
=δ。
对s >1,令P s (A )=
∑n ∈A n −s
∑∞n =1n
−s 。
求证:lim s →1+P s (A )=δ。
第4题:[15分]
设(Ω,F ,P )为一个概率空间,G 为F 的子σ-代数,X ∈L 1(Ω,F ,P ),Y ∈L 1(Ω,G ,P )。
试说明Y ≤E (X |G )几乎必然成立当且仅当∫
G (Y −X )dP ≤0对所有G ∈G 成立。
如果条件Y ∈L 1(Ω,G ,P )被替换为Y ∈L 1(Ω,F ,P ),请判断前述结论是否仍成立。
第5题:[15分]
(a)假定X,Y∈L1(Ω,F,P)且E(X|Y)≤Y与E(Y|X)≤X都几乎必然成立。
试说明P(X=Y)=1。
(b)假定X,Y∈L1(Ω,F,P)且E(X|Y)≤Y与E(Y|X)≥X都几乎必然成立。
试说明P(X≤Y)>0。
(c)对任意ϵ∈(0,1],试构造概率空间(Ω,F,P),随机变量X,Y∈L1(Ω,F,P),使得E(X|Y)≤Y,
E(Y|X)≥X,且P(X≤Y)=ϵ。
第6题:[20分]
令(Ω,F,P)为一个概率空间,X∈L1(Ω,F,P)。
试说明P(X=0)=1当且仅当E(|X|Y)=0对所有Y∈m(F)成立。
第7题:[20分]
设(X n)为一随机变量序列,X为一随机变量。
考虑以下三个陈述。
(A)逐点收敛:P(X n→X)=1。
(B)依概率收敛:对任意ϵ>0,P(|X n−X|>ϵ)→0,n→∞。
(C)L1收敛:E(|X n−X|)→0。
试说明(A)蕴含(B),而在|X n|<2019的前提下还有(B)蕴含(C)。
第8题:[0分]
本题不计入期末考试总分。
如果你还有时间将第1题与(或)第2题中你未选择解答的题目在此进行正确解答,我们可以考虑酌情提升你的平时表现分(包括作业与期中考试)。