华南理工大学837印刷材料及适性2014-2018年考研专业课真题试卷

合集下载

2016-2018年华南理工大学827材料科学基础硕士研究生入学考试题

827华南理工大学2018年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：材料科学基础适用专业：材料科学与工程；材料工程(专硕)置换固溶体的溶解度与原子尺寸因素、（12 ）因素、的晶体结构类型为（13 ），它的晶格常数为时，体积会（15 ），这是因为（）面上运动的伯氏矢量为[110]2a b 的螺位错受阻时，能否通过交或(111)面中的哪个面上继续滑移运动？为什么？请绘图表示（共70分）、论述晶界和晶粒大小对多晶体塑性变形的作用和影响。

（10分）、金属结晶为什么要有过冷度？形核率与温度的关系如何？什么是金属玻璃？如何、下图所示为某晶体结构的几个晶面原子结构图，试回答以下问题：（共）绘出其晶体结构的晶胞图，并给出晶胞所占有的原子数。

（3分））指出其所属布拉菲点阵类型。

（2分））计算其致密度。

（3分）20钢的A c1=735o C，A c3=845 o C；T10钢的A c1=730o C，A钢供货状态（正火组织）硬度为HRC15~20，经淬火后的硬度只有827华南理工大学2017年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：材料科学基础适用专业：材料物理与化学根据铁碳相图，完成下列内容：（15分））写出下列线段的名称，GS，ES，PSK，CD）写出所有平衡转变反应式（要求写完整）；）写出Wc=0.65%的亚共析钢的亚稳态结晶过程，并计算室温时相的相对含量，827华南理工大学2016年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：材料科学基础适用专业：材料物理与化学如下图，某晶体的滑移面上有一个柏氏矢量b的位错环，并受到一个均匀的切应τ，请分析（共12分）：1）该错位环各段位错的结构类型。

（4分）2）求各段位错所受力的大小和方向。

2016-2018年华南理工大学827材料科学基础硕士研究生入学考试题

（3分））指出其所属布拉菲点阵类型。

（2分））计算其致密度。

（4分）2）求各段位错所受力的大小和方向。

华南理工大学印刷材料及适性2010-2018年考研初试真题

1. 表面施胶 2. 纸张的粗糙度 3. 纸张的表面强度 4. 纸张的视觉白度 5. 纸张的匀度 6. 有机颜料 7. 油墨连接料 8. UV 油墨 9. 油墨的流变曲线 10. 油墨的黏温特性
三、简答题（每题 12 分，合计 60 分）
1. 简述纸张的结构特点 2. 纸张表面效率的定义及应用 3. 如何解释纸张吸湿、脱湿滞后现象 4. 给出松香与甘油反应获得松香甘油酯的反应式 5. 简述润版液的主要成分及其在胶印中的作用
1.从应用需求出发，纸张的质量大体上可归纳为以下几个方面：（1）、（2）、（3）、（4）、（5）以及其他特性。
2.油墨的颜色由（1）决定。从密度测量的角度，三原色油墨的颜色特征有四个方面：（2）、（3）、（4）、（5）。
二、概念题（每题 3 分，计 30 分。请将答案写到答题纸上）
837 华南理工大学
2018 年攻读硕士学位研究生入学考试试卷
（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）
科目名称：印刷材料及适性适用专业：制浆造纸工程；轻工技术与工程(专硕)
共2 页
一、填空题（每个填ห้องสมุดไป่ตู้ 2 分，合计 20 分。请将答案按照编号写到答题纸上）
1、纸张的印刷性能是以印刷过程中（1）、（2）和（3）之间的相互作用为基
础的。
2、纸张的（4）和（5）是影响纸张印刷质量的两个重要性质，两者之间有一定
关系，但又是纸张的两个不同特性。
3、油墨的连接料赋予了油墨（6）、（7）；同时它又是一种（8），颜料要依靠
连接料的（9）牢固的附着于承印物表面，并使墨膜耐摩擦，有（10）。
二、概念题（每题 4 分，合计 40 分。请将答案写到答题纸上）

2018年华南理工大学研究生入学考试专业课真题801_材料力学

801B华南理工大学2018 年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：材料力学适用专业：力学；机械工程；船舶与海洋工程；机械工程(专硕)；船舶与海洋工程(专硕)；车辆工程(专硕)共 4 页一、（15 分）试建立薄壁圆管的扭转切应力近似公式，并证明当壁厚δ≤R0 （R为圆10 0管横截面平均半径）时，该公式的最大误差不超过5%。

二、（20 分）图示支架中，三根杆件材料相同，杆1 的横截面面积为200mm2，杆2 的横截面面积为300mm2，杆3 横截面面积为400 mm2。

若F p=30kN，α=30o，试求各杆横截面上的应力。

（第二题图）三、（20分）No.28a 工字钢梁如图，在梁上作用有可移动荷载P。

已知No.28a 工字钢横截面对中性轴z 轴的惯性矩I z=7114.14cm4，弯曲截面系数W z=508.15cm3，中性轴一侧截面对中性轴的静矩S z max=288.96cm3，腹板宽度b=8.5mm。

试求：（1）为提高梁的承载能力，确定长度a、b 的合理数值；（2）已知材料的许用正应力[σ]=160MPa，按弯曲正应力强度条件确定梁的许可荷载[P ]；（3）已知材料的许用切应力[τ]=80MPa，校核梁的弯曲切应力强度。

（第三题图）四、（20分）直径D=40mm 的铝圆柱，放在厚度δ=2mm 的钢套筒内，设两者之间光滑无间隙套合。

作用于圆柱的轴向压力F p=40kN。

若铝的弹性模量及泊松比分别为E=70GPa，μ=0.35，钢的弹性模量为E1=210GPa。

试求铝圆柱内的三个主应力和最大切应力。

（提示：套筒内各点的径向应力可忽略）（第四题图）五、（25 分）有一支撑架如图所示，在直杆 CD 端点 D 处受到一水平集中力 F = 10 kN 的作用。

已知斜撑杆 AB 两端及直杆 CD 的 C 端采用相同的柱形销约束（柱形销钉垂直于支撑架平面），斜撑杆 AB 的截面为环形，外径 D = 45mm ，内径 d = 36mm ，材料为 A3 钢， E = 200GPa ， σ P = 200 M Pa 。

2018年华南理工大学研究生入学考试专业课真题839_高分子物理

839华南理工大学2018 年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：高分子物理适用专业：材料科学与工程；材料工程(专硕)共页一、名词解释（每题3 分，共30 分）1、共聚物的序列结构2、等效自由结合链3、链段4、时温等效原理5、取向6、支化度7、熔体破裂8、特性黏度9、Avrami 指数10、应变软化二、判断题（正确的在括号里打√，错误的打；每题1 分，共25 分）（）1、天然橡胶溶解于正庚烷是符合高分子溶剂的溶剂化原则，PVC 溶解于环己酮是符合高分子溶剂选择的极性相近原则。

（）2、橡胶拉伸过程中的应力应变关系符合胡克定律。

（）3、玻璃化转变是热力学上的相转变。

（）4、玻璃态高聚物的强迫高弹形变与橡胶的高弹形变本质上是一样的。

（）5、聚丙烯球晶的晶粒尺寸越大，它的透明性越差，但冲击性能越好。

（）6、在较大的压力下观察到高聚物的T g提高了。

（）7、同一高聚物测量T g 时，升温速度快测得的T g 低，降温速度快测得的T g 高。

（）8、根据自由体积理论，聚合物的自由体积随着温度的降低而减小。

（）9、高聚物的结晶温度越高，熔限越大。

（）10、SBS 树脂是由丙烯腈、丁二烯、苯乙烯组成的三元嵌段共聚物。

（）11、结晶聚合物用作塑料时其使用温度范围为T b~T g，交联橡胶的使用温度范围是T b~T d。

（）12、分子在晶体中是规整排列的，所以只有全同立构或间同立构的高分子才能结晶，无规立构的高分子不能结晶。

（）13、淬火使结晶度减小，退火使结晶度增加。

（）14、分子间作用力越大，T f 越高。

（）15、相同的聚丙烯的标准试片，用电子拉力机在拉伸速度30mm/min 下测得的模量比拉伸速度60mm/min 下测得的模量高。

（）16、不同单键的柔性顺序为：-Si-O- > -C-O- > -C-N- > -C-C-。

华南理工大学845材料物理化学2014-2018年考研专业课真题试卷

系的方程式
（15）
。
7、固相反应一般包括（16）、硅酸盐工业中，最重要的固相反应处于
（17）、（18）（19）范围。
三个过程，在
8、两相化学势相等，但化学势的一阶偏微商不相等的相变称为（20）
发生时有（21）
和
（22）的变化，因此
（23）
（24）
、
（25）
等属于此类相变。
，、
9、（26）
4、晶体缺陷分为点缺陷、线缺陷、面缺陷和体缺陷，以下缺陷中不属于点缺陷的是（）
第 1页
华南理工大学2018年考研专业课真题试卷（原版）
A、弗伦克尔缺陷
B、肖特基缺陷
C、色心
D、固溶体
5、超疏水是指水在固体表面的接触角大于 150，即液体在固体表面不浸润，要达到
此状态，不能采用的方法有（）
A、除去固体表面吸附膜
A、（100）
B、（110）
C、（111）
9、在三元相图中两相界线的自由度是（
A、0
B、1
C、2
） D、3
第2页
华南理工大学2018年考研专业课真题试卷（原版）
10、一定量的硫型固态物质熔融成液态时，液态与固态相比发生（
A、体积膨胀
B、体积收缩
C、体积不变化
）现象。
11、有物质定向迁移的扩散一定是由（
和
（10）
。
4、玻璃的很多性质取决于玻璃网络参数中的 Y 值。要构成三维网络结构，硅酸盐玻
璃中，此值通常为（11）
。
5、由于（12）的浓度主要取决于
的结果，必然会在晶体结构中产生“组分缺陷”，组分缺陷
（13）

2018年华南理工大学研究生入学考试专业课真题870_英语语言文学综合

870华南理工大学2018 年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：英语语言文学综合适用专业：外国语言文学共 6 页Part OneFundamentals of Linguistics and Literature (外国语言学及应用语言学和英语语言文学考生共答部分)I.Define the following terms in your own words（20 points）1.Turn-taking2.Validity3.Modernism4.IronyII．Answer the following questions（40 points）1.The Australian linguist Halliday considers language as having three main functions.Please specify these three functions.2.What are homophones? Please give two pairs of examples.3.What is narration? Can you support your answer with examples?4.What is stream of consciousness? Please explain it with an example from a literarytext you’ve read.Part TwoTest for Students of Linguistics and Applied Linguistics(外国语言学及应用语言学考生必答部分)I．Discuss and comment on the following topics（40 points）petence and performance2.Error and mistake3.The relationship between pragmatics and semantics4.In Hymes’ view, learning language is learning to perform certain functions.II．Analyze the language data according to the requirements（50 points）1.Read the following two passages, and analyze the varieties of language use and thedifferent perspectives on language in an essay of about 250 words. Please back up your idea with the related linguistic theories. (25 points)Passage A：A living language is continually changing, even in a small community. Usually, linguistic changes take place so slowly that it is only by looking back over at least several decades that one can detect changes. The most obvious changes in the language of a large, sophisticated community occur in the field of vocabulary, for in such a community new words are constantly being created and old words discarded.(D. Ward, The Russian Language Today)Passage B：Hampshire: Am I right in thinking − you must correct me if I’m wrong − that your studies of language have led you to the conclusion that there are certain …common … underlying structures common to all languages which constitute something like a universal grammar?Chomsky: Yes. It seems to me that the evidence available to us suggests that there must be some very deep … inborn principles, probably of a highly restrictive nature that determine how knowledge of a language emerges in an individual given the very scattered and degenerate data available to him.Hampshire: Your evidence is derived really from learning, the study of learning language?Chomsky: It seems to me that if you want to study learning in a serious way, what one really has to do is to study a sort of input-output situation. We have an organism of which we know nothing; we know what kind of data is available to it; we can discover that; and the first question we must then try to answer is: what kind of a mental structure does the organism develop when that evidence is presented to it?2.Read and compare the following two passages, and analyze the linguistic structuresand styles in an essay of about 250 words. (25 points)Passage C：We, the peoples of the U. N., determined to save succeeding generations from the scourge of war, which twice in our lifetime has brought untold suffering to mankind, and to reaffirm faith in fundamental rights, in the dignity and worth of the humanperson, in the equal rights of men and women and of nations large and small, and to establish conditions under which justice and respect for the obligations arising from treaties and other sources of international law can be maintained, and to promote social progress and better standards of life in larger freedom, and for these ends, to practice tolerance and live together in peace with one another as good neighbors, and to unite our strength to maintain international peace and security, and to ensure, by the acceptance of principles and the institution of methods, that armed force shall not be used, save in the common interest, and to employ international machinery for the promotion of economic and social advancement of all peoples, have resolved to combine our efforts to accomplish these aims.（The Charter of the United Nations）Passage D：He stepped into the stream. It was a shock. His trousers clung tight to his legs. His shoes felt the gravel. The water was a rising cold shock.…His mouth dry, his heart down, Nick reeled in. He had never seen so big a trout. There was a heaviness, a power not to be held, and then the bulk of him, as he jumped. He looked as broad as a salmon.Nick’s hand was shaky. He reeled in slowly. The thrill had been too much. He felt, vaguely, a little sick, as though it would be better to sit down.(Ernest Hemingway, Big Two-Hearted River)Part ThreeTest for Students of English Language and Literature(英语语言文学考生必答部分)I．Discuss and comment on the following topics（40 points）ment on Hemingway (Code) Heroes.ment on Oedipal Complex in literature.ment on the importance of interior monologue in any literary text written by afemale writer.ment on realism and its significance in literary history.II．Analysis and appreciation（50 points）1.Analyze the following passage from Moby Dick (1851), written by Herman Melville (1819-1891), in an essay of no less than 250 words. (25 points)Now, when I say that I am in the habit of going to sea whenever I begin to grow hazy about the eyes, and begin to be over conscious of my lungs, I do not mean to have it inferred that I ever go to sea as a passenger. For to go as a passenger you must need to have a purse, and a purse is but a rag unless you have something in it. Besides, passengers get sea-sick- grow quarrelsome- don't sleep of nights- do not enjoy themselves much, as a general thing;- no, I never go as a passenger; nor, though I am something of a salt, do I ever go to sea as a Commodore, or a Captain, or a Cook. I abandon the glory and distinction of such offices to those who like them. For my part, I abominate all honorable respectable toils, trials, and tribulations of every kind whatsoever. It is quite as much as I can do to take care of myself, without taking care of ships, barques, brigs, schooners, and what not. And as for going as cook,- though I confess there is considerable glory in that, a cook being a sort of officer on ship-board- yet, somehow, I never fancied broiling fowls;- though once broiled, judiciously buttered, and judgmatically salted and peppered, there is no one who will speak more respectfully, not to say reverentially, of a broiled fowl than I will. It is out of the idolatrous dotings of the old Egyptians upon broiled ibis and roasted river horse, that you see the mummies of those creatures in their huge bake-houses the pyramids.No, when I go to sea, I go as a simple sailor, right before the mast, plumb down into the fore-castle, aloft there to the royal mast-head. True, they rather order me about some, and make me jump from spar to spar, like a grasshopper in a May meadow. And at first, this sort of thing is unpleasant enough. It touches one's sense of honor, particularly if you come of an old established family in the land, the Van Rensselaers, or Randolphs, or Hardicanutes. And more than all, if just previous to putting your hand into the tar-pot, you have been lording it as a country schoolmaster, making the tallest boys stand in awe of you. The transition is a keen one, I assure you, from a schoolmaster to a sailor, and requires a strong decoction of Seneca and the Stoics to enable you to grin and bear it. But even this wears off in time.What of it, if some old hunks of a sea-captain orders me to get a broom and sweep down the decks? What does that indignity amount to, weighed, I mean, in the scales of the New Testament? Do you think the archangel Gabriel thinks anything the less of me, because I promptly and respectfully obey that old hunks in that particular instance? Who ain't a slave? Tell me that. Well, then, however the old sea-captains may order me about- however they may thump and punch me about, I have the satisfaction ofknowing that it is all right; that everybody else is one way or other served in much the same way- either in a physical or metaphysical point of view, that is; and so the universal thump is passed round, and all hands should rub each other's shoulder-blades, and be content.Again, I always go to sea as a sailor, because they make a point of paying me for my trouble, whereas they never pay passengers a single penny that I ever heard of. On the contrary, passengers themselves must pay. And there is all the difference in the world between paying and being paid. The act of paying is perhaps the most uncomfortable infliction that the two orchard thieves entailed upon us. But being paid, - what will compare with it? The urbane activity with which a man receives money is really marvelous, considering that we so earnestly believe money to be the root of all earthly ills, and that on no account can a monied man enter heaven. Ah! how cheerfully we consign ourselves to perdition!Finally, I always go to sea as a sailor, because of the wholesome exercise and pure air of the fore-castle deck. For as in this world, head winds are far more prevalent than winds from astern (that is, if you never violate the Pythagorean maxim), so for the most part the Commodore on the quarter-deck gets his atmosphere at second hand from the sailors on the forecastle. He thinks he breathes it first; but not so. In much the same way do the commonalty lead their leaders in many other things, at the same time that the leaders little suspect it. But wherefore it was that after having repeatedly smelt the sea as a merchant sailor, I should now take it into my head to go on a whaling voyage; this the invisible police officer of the Fates, who has the constant surveillance of me, and secretly dogs me, and influences me in some unaccountable way- he can better answer than anyone else. And, doubtless, my going on this whaling voyage, formed part of the grand programme of Providence that was drawn up a long time ago. It came in as a sort of brief interlude and solo between more extensive performances. I take it that this part of the bill must have run something like this:"Grand Contested Election for the Presidency of the United States."WHALING VOYAGE BY ONE ISHMAEL.""BLOODY BATTLE IN AFFGHANISTAN."Though I cannot tell why it was exactly that those stage managers, the Fates, put me down for this shabby part of a whaling voyage, when others were set down for magnificent parts in high tragedies, and short and easy parts in genteel comedies, and jolly parts in farces- though I cannot tell why this was exactly; yet, now that I recall all the circumstances, I think I can see a little into the springs and motives which being cunningly presented to me under various disguises, induced me to set about performing the part I did, besides cajoling me into the delusion that it was a choice resulting from my own unbiased freewill and discriminating judgment.Chief among these motives was the overwhelming idea of the great whale himself. Such a portentous and mysterious monster roused all my curiosity. Then the wild and distant seas where he rolled his island bulk; the undeliverable, nameless perils of the whale; these, with all the attending marvels of a thousand Patagonian sights and sounds, helped to sway me to my wish. With other men, perhaps, such things would not have been inducements; but as for me, I am tormented with an everlasting itch for things remote. I love to sail forbidden seas, and land on barbarous coasts. Not ignoring what is good, I am quick to perceive a horror, and could still be social with it- would they let me- since it is but well to be on friendly terms with all the inmates of the place one lodges in.By reason of these things, then, the whaling voyage was welcome; the great flood-gates of the wonder-world swung open, and in the wild conceits that swayed me to my purpose, two and two there floated into my inmost soul, endless processions of the whale, and, mid most of them all, one grand hooded phantom, like a snow hill in the air.2.Read the following Sonnet by William Shakespeare (1564-1616), and write an analytical essay in about 250 words. (25 points)Shall I compare thee to a summer's day?Thou art more lovely and more temperate:Rough winds do shake the darling buds of May,And Summer's lease hath all too short a date:Sometime too hot the eye of heaven shines,And often is his gold complexion dimm'd;And every fair from fair sometime declines,By chance, or nature's changing course, untrimm'd:But thy eternal summer shall not fadeNor lose possession of that fair thou owest;Nor shall death brag thou wander'st in his shadeWhen in eternal lines to time thou growest:So long as men can breathe or eyes can see,So long lives this and this gives life to thee.。

2018年华南理工大学研究生入学考试专业课真题626_英语综合水平测试

626华南理工大学2018 年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：英语综合水平测试适用专业：外国语言文学performances. Rather than playing tricks with alternatives presented to participants, we secretly altered the outcomes of their choices, and recorded how they react. For example, in an early study we showed our volunteers pairs of pictures of faces and asked them to choose the most attractive. In some trials, immediately after they made their choice, we asked people to explain the reasons behind their choices.Unknown to them, we sometimes used a double-card magic trick to secretly exchange one face for the other so they ended up with the face they did not choose. Common sense dictates that all of us would notice such a big change in the outcome of a choice. But the result showed that in 75 per cent of the trials our participants were blind to the mismatch, even offering “reasons” for their“choice”.We called this effect “choice blindness”, echoing change blindness,the phenomenon identified by psychologists where a remarkably large number of people fail to spot a major change in their environment. Recall the famous experiments where X asks Y for directions; while Y is struggling to help, X is switched for Z - and. Y fails to notice. Researchers are still pondering the full implications, but it does show how little information we use in daily life, and undermines the idea that we know what is going on around us.When we set out, we aimed to weigh in on the enduring, complicated debate about self-knowledge and intentionality. For all the intimate familiarity we feel we have with decision making, it is very difficult to know about it from the “inside”: one of the great barriers for scientific research is the nature of s ubjectivity.As anyone who has ever been in a verbal disagreement can prove, people tend to give elaborate justifications for their decisions, which we have every reason to believe are nothing more than rationalizations after the event. To prove such people wrong, though, or even provide enough evidence to change their mind, is an entirely different matter: who are you to say what my reasons are?But with choice blindness we drive a large wedge between intentions and actions in the mind. As our participants give us verbal explanations about choices they never made, we can show them beyond doubt - and prove it - that what they say cannot be true. So our experiments offer a unique window into confabulation (the story-telling we do to justify things after the fact) that is otherwise very difficult to come by. We can compare everyday explanations with those under lab conditions, looking for such things as the amount of detail in descriptions, how coherent the narrative is, the emotional tone, or even the timing or flow of the speech. Then we can create a theoretical framework to analyse any kind of exchange.This framework could provide a clinical use for choice blindness: for example, two of our ongoing studies examine how malingering might develop into truesymptoms, and how confabulation might play a role in obsessive-compulsive disorder.Importantly, the effects of choice blindness go beyond snap judgments. Depending on what our volunteers say in response to the mismatched outcomes of choices (whether they give short or long explanations, give numerical rating or labeling, and so on) we found this interaction could change their future preferences to the extent that they come to prefer the previously rejected alternative. This gives us a rare glimpse into the complicated dynamics of self-feedback (“I chose this, I publicly said so, therefore I must like it”), which we suspect lies behind the formation of many everyday preferences.We also want to explore the boundaries of choice blindness. Of course, it will be limited by choices we know to be of great importance in everyday life. Which bride or bridegroom would fail to notice if someone switched their partner at the altar through amazing sleight of hand? Yet there is ample territory between the absurd idea of spouse-swapping, and the results of our early face experiments.For example, in one recent study we invited supermarket customers to choose between two paired varieties of jam and tea. In order to switch each participant’s choice without them noticing, we created two sets of “magical” jars, with lids at both ends and a divider inside. The jars looked normal, but were designed to hold one variety of jam or tea at each end, and could easily be flipped over.Immediately after the participants chose, we asked them to taste their choice again and tell us verbally why they made that choice. Before they did, we turned over the sample containers, so the tasters were given the opposite of what they had intended in their selection. Strikingly, people detected no more than a third of all these trick trials. Even when we switched such remarkably different flavors as spicy cinnamon and apple for bitter grapefruit jam, the participants spotted less than half of all s witches.We have also documented this kind of effect when we simulate online shopping for consumer products such as laptops or cell phones, and even apartments. Our latest tests are exploring moral and political decisions, a domain where reflection and deliberation are supposed to play a central role, but which we believe is perfectly suited to investigating using choice blindness.Throughout our experiments, as well as registering whether our volunteers noticed that they had been presented with the alternative they did not choose, we also quizzed them about their beliefs about their decision processes. How did they think they would feel if they had been exposed to a study like ours? Did they think they would have noticed the switches? Consistently, between 80 and 90 per cent of people said that they believed they would have noticed something was wrong.Gervais, discovers a thing called “lying” and what it can get him. Within days, M ark is rich, famous, and courting the girl of his dreams. And because nobody knows what “lying” is? he goes on, happily living what has become a complete and utter farce.It’s meant to be funny, but it’s also a more serious commentary on us all. As Americans, we like to think we value the truth. Time and time again, public-opinion polls show that honesty is among the top five characteristics we want in a leader, friend, or lover; the world is full of sad stories about the tragic consequences of betrayal. At the same time, deception is all around us. We are lied to by government officials and public figures to a disturbing degree; many of our social relationships are based on little white lies we tell each other. We deceive our children, only to be deceived by them in return. And the average person, says psychologist Robert Feldman, the author of a new book on lying, tells at least three lies in the first 10 minutes of a conversation. “There’s always been a lot of lying,” says Feldman，whose new book, The Liar in Your Life, came out this month. “But I do think we’re seeing a kind of cultural shift where we’re lying more, it’s easier to lie, and in some ways it’s almost more acceptable.”As Paul Ekman, one of Feldman’s longtime lying colleagues and the inspiration behind the Fox IV series “Lie To Me” defines it，a liar is a person who “intends to mislead,”“deliberately,” without being asked to do so by the target of the lie. Which doesn’t mean that all lies are equally toxic: some are simply habitual –“My pleasure!”-- while others might be well-meaning white lies. But each, Feldman argues, is harmful, because of the standard it creates. And the more lies we tell, even if th ey’re little white lies, the more deceptive we and society become.We are a culture of liars, to put it bluntly, with deceit so deeply ingrained in our mind that we hardly even notice we’re engaging in it. Junk e-mail, deceptive advertising, the everyday p leasantries we don’t really mean –“It’s so great to meet you! I love that dress”– have, as Feldman puts it, become “a white noise we’ve learned to neglect.” And Feldman also argues that cheating is more common today than ever. The Josephson Institute, a nonprofit focused on youth ethics, concluded in a 2008 survey of nearly 30,000 high school students that “cheating in school continues to be rampant, and it’s getting worse.” In that survey, 64 percent of students said they’d cheated on a test during the past year, up from 60 percent in 2006. Another recent survey, by Junior Achievement, revealed that more than a third of teens believe lying, cheating, or plagiarizing can be necessary to succeed, while a brand-new study, commissioned by the publishers of Feldman’s book, shows that 18-to 34-year-olds--- those of us fully reared in this lying culture --- deceive more frequently than the general population.Teaching us to lie is not the purpose of Feldman’s book. His subtitle, in fact, is “the way to truthful relationships.” But if his book teaches us anything, it’s that we should sharpen our skills — and use them with abandon.Liars get what they want. They avoid punishment, and they win others’ affection. Liars make themselves sound smart and intelligent, they attain power over those of us who believe them, and they often use their lies to rise up in the professional world. Many liars have fun doing it. And many more take pride in getting away with it.As Feldman notes, there is an evolutionary basis for deception: in the wild, animals use deception to “play dead” when threatened. But in the modem world, the motives of our lying are more selfish. Research has linked socially successful people to those who are good liars. Students who succeed academically get picked for the best colleges, despite the fact that, as one recent Duke University study found, as many as 90 percent of high-schoolers admit to cheating. Even lying adolescents are more popular among their peers.And all it takes is a quick flip of the remote to see how our public figures fare when they get caught in a lie: Clinton keeps his wife and goes on to become a national hero. Fabricating author James Frey gets a million-dollar book deal. Eliot Spitzer’s wife stands by his side, while “Appalachian hiker” Mark Sanford still gets to keep his post. If everyone else is being rewarded for lying，don’t we need to lie, too, just to keep up?But what’s funny is that even as we admit to being liars, study after study shows that most of us believe we can tell when others are lying to us. And while lying may be easy, spotting a liar is far from it. A nervous sweat or shifty eyes can certainly mean a person’s uncomfortable, but it doesn’t necessarily mean they’re lying. Gaze aversion, meanwhile, has more to do with shyness than actual deception. Even polygraph machines are unreliable. And according to one study, by researcher Bella DePaulo, we’re only able to differentiate a lie from truth only 47 percent of the time, less than if we guessed randomly. “Basically everything we’ve heard about catching a liar is wrong,” says Feldman, who heads the College of Social and Behavioral Sciences at the University of Massachusetts, Amherst.Ekman, meanwhile, has spent decades studying micro-facial expressions of liars: the split-second eyebrow arch that shows surprise when a spouse asks who was on the phone; the furrowed nose that gives away a hint of disgust when a person says “I love you.” He’s trained everyone from the Secret Service to the TSA, and believes that with close study, it’s possible to identify those tiny emotions. The hard part, of course, is proving them. “A lot of times, it’s easier to believe,” says Feldman. “It takes a lot ofThere were, however, different explanations of this unhappy fact. Sean Pidgeon put the blame on “humanities departments who are responsible for the leftist politics that still turn people off.” Kedar Kulkarni blamed “the absence of a culture that privileges Learning to improve oneself as a human being.” Bethany blamed universities, which because they are obsessed with “maintaining funding” default on th e obligation to produce “well rounded citizens.” Matthew blamed no one，because i n his view the report’s priorities are just what they should be: “When a poet creates a vaccine or a tangible good that can be produced by a Fortune 500 company, I’ll rescind my comment.”Although none of these commentators uses the word, the issue they implicitly raise is justification. How does one justify funding the arts and humanities? It is clear which justifications are not available. You cannot argue that the arts and humanities are able to support themselves through grants and private donations. You cannot argue that a state’s economy will benefit by a new reading of “Hamlet.” You can’t argue -- well you can, but it won’t fly -- that a graduate who is well-versed in the history of Byzantine art will be attractive to employers (unless the employer is a museum). You can talk as Bethany does about “well rounded citizens,” but that ideal belongs to an earlier period, when the ability to refer knowledgeably to Shakespeare or Gibbon or the Thirty Years War had some cash value (the sociologists call it cultural capital). Nowadays, larding your conversations with small bits of erudition is more likely to irritate than to win friends and influence people.At one time justification of the arts and humanities was unnecessary because, as Anthony Kronman puts it in a new book, “Education’s End: Why Our Colleges and Universities Have Given Up on the Meaning of Life，” it was assumed that “a college was above all a place for the training of character, for the nurturing of those intellectual and moral habits that together from the basis for living the best life one can.”It followed that the realization of this goal required an immersion in the great texts of literature, philosophy and history even to the extent of memorizing them, for “to acquire a text by memory is to fix in one’s mind the image and example of the author and his subject.”It is to a version of this old ideal that Kronman would have us return, not because of a professional investment in the humanities (he is a professor of law and a former dean of the Yale Law School), but because he believes that only the humanities can address “the crisis of spirit we now confront” and “restore the wonder which those who have glimpsed the human condition have always felt, and which our scientific civilization, with its gadgets and discoveries, obscures.”As this last quotation makes clear, Kronman is not so much mounting a defense ofthe humanities as he is mounting an attack on everything else. Other spokespersons for the humanities argue for their utility by connecting them (in largely unconvincing ways) to the goals of science, technology and the building of careers. Kronman, however, identifies science, technology and careerism as impediments to living a life with meaning. The real enemies, he declares，are “the careerism that distracts from life as a whole” and “the blind acceptance of science and technology that disguise and deny our human condition.” These false idols，he says，block the way to understanding. We must turn to the humanities if we are to “meet the need for meaning in an age of vast but pointless powers,”for only the humanities can help us recover the urgency of “the question of what living is for.”The humanities do this, Kronman explains, by exposing students to “a range of texts that express with matchless power a number of competing answers to this question.” In the course of this program —Kronman calls it “secular humanism”—students will be moved “to consider which alternatives lie closest to their own evolving sense of self?” As they survey “the different ways of living that have been held up by different authors,” they will be encouraged “to enter as deeply as they can into the experiences, ideas, and values that give each its permanent appeal.” And not only would such a “revitalized humanism” contribute to the growth of the self,it “would put the conventional pieties of our moral and political world in question” and “bring what is hidden into the open — the highest goal of the humanities and the first responsibility of every teache r.”Here then is a justification of the humanities that is neither strained (reading poetry contributes to the state’s bottom line) nor crassly careerist. It is a stirring vision that promises the highest reward to those who respond to it. Entering into a conversation with the great authors of the western tradition holds out the prospect of experiencing “a kind of immortality” and achieving “a position immune to the corrupting powers of time.”Sounds great, but I have my doubts. Does it really work that way? Do the humanities ennoble? And for that matter, is it the business of the humanities, or of any other area of academic study, to save us?The answer in both cases, I think, is no. The premise of secular humanism (or of just old-fashioned humanism) is that the examples of action and thought portrayed in the enduring works of literature, philosophy and history can create in readers the desire to emulate them. Philip Sydney put it as well as anyone ever has when he asks (in “The Defense of Poesy” 1595), “Who reads Aeneas carrying old Anchises on his back that wishes not it was his fortune to perform such an excellent act?” Thrill to this picture of42.What does Anthony Kronman oppose in the process to strive for meaningful life?A.Secular humanism.B. Careerism.C. Revitalized humanismD. Cultural capital.43.Which of the following is NOT mentioned in this article?A.Sidney Carton killed himself.B.A new reading of Hamlet may not benefit economy.C.Faust was not willing to sell his soul.D.Philip Sydney wrote The Defense of Poesy.44.Which is NOT true about the author?A.At the time of writing, he has been in the field of the humanities for 45 years.B.He thinks the humanities are supposed to save at least those who study them.C.He thinks teachers and students of the humanities just learn how to analyze literary effects and to distinguish between different accounts of the foundations of knowledge.D.He thin ks Kronman’s remarks compromise the object its supposed praise.45.Which statement could best summarize this article?A.The arts and humanities fail to produce well-rounded citizens.B.The humanities won’t save us because humanities departments are too leftist.C.The humanities are expected to train character and nurture those intellectual andmoral habits for living a life with meaning.D.The humanities don’t bring about effects in the world but just give pleasure to those who enjoy them.Passage fourJust over a decade into the 21st century, women’s progress can be celebrated across a range of fields. They hold the highest political offices from Thailand to Brazil, Costa Rica to Australia. A woman holds the top spot at the International Monetary Fund; another won the Nobel Prize in economics. Self-made billionaires in Beijing, tech innovators in Silicon Valley, pioneering justices in Ghana—in these and countless other areas, women are leaving their mark.But hold the applause. In Saudi Arabia, women aren’t allowed to drive. In Pakistan, 1,000 women die in honor killings every year. In the developed world, women lag behind men in pay and political power. The poverty rate among women in the U.S. rose to 14.5% last year.To measure the state of women’s progress. Newsweek ranked 165countries, looking at five areas that affect women’s lives; treatment under the law, workforce participation, political power, and access to education and health care. Analyzing datafrom the United Nations and the World Economic Forum, among others, and consulting with experts and academics, we measured 28 factors to come up with our rankings.Countries with the highest scores tend to be clustered in the West, where gender discrimination is against the law, and equal rights are constitutionally enshrined. But there were some surprises. Some otherwise high-ranking countries had relatively low scores for political representation. Canada ranked third overall but 26th in power, behind countries such as Cuba and Burundi. Does this suggest that a woman in a nation’s top office translates to better lives for women in general? Not exactly.“Trying to quantify or measure the impact of women in politics is hard because in very few countries have there been enough women in politics to make a difference,” says Anne-Marie Goetz, peace and security adviser for U.N. Women.Of course, no index can account for everything. Declaring that one country is better than another in the way that it treats more than half its citizens means relying on broad strokes and generalities. Some things simply can’t be measured.And cross-cultural comparisons can t account for difference of opinion.Certain conclusions are nonetheless clear. For one thing, our index backs up a simple but profound statement made by Hillary Clinton at the recent Asia-Pacific Economic Cooperation summit. “When we liberate the economic potential of women, we elevate the economic performance of communities, nations, and the world,”she said. “There’s a simulative effect that kicks in when women have greater access to jobs and the economic lives of our countries: Greater political stability. Fewer military conflicts. More food. More educational opportunity for children. By harnessing the economic potential of all women, we boost opportunity for all people.”46.What does the author think about women’s progress so far?A.It still leaves much to be desired.B.It is too remarkable to be measured.C.It has greatly changed women's fate.D.It is achieved through hard struggle.47.In what countries have women made the greatest progress?A.Where women hold key posts in government.B.Where women’s rights are protected by law.C.Where women’s participation in management is high.D.Where women enjoy better education and health care.48.What do Newsweek rankings reveal about women in Canada?A.They care little about political participation.B.They are generally treated as equals by men.C.They have a surprisingly low social status.D.They are underrepresented in politics.49.What does Anne-Marie Goetz think of a woman being in a nation's top office?A.It does not necessarily raise women's political awareness.B.It does not guarantee a better life for the nation's women.C.It enhances women's status.D.It boosts women's confidence.50.What does Hillary Clinton suggest we do to make the world a better place?A.Give women more political power.B.Stimulate women's creativity.C.Allow women access to education.D.Tap women's economic potential.Passage fiveThe idea that government should regulate intellectual property through copyrights and patents is relatively recent in human history, and the precise details of what intellectual property is protected for how long vary across nations and occasionally change. There are two standard sociological justifications for patents or copyrights: They reward creators for their labor, and they encourage greater creativity. Both of these are empirical claims that can be tested scientifically and could be false in some realms.Consider music. Star performers existed before the 20th century, such as Franz Liszt and Niccolo Paganini, but mass media produced a celebrity system promoting a few stars whose music was not necessarily the best or most diverse. Copyright provides protection for distribution companies and for a few celebrities, thereby helping to support the industry as currently defined, but it may actually harm the majority of performers. This is comparable to Anatole France's famous irony, "The law, in its majestic equality, forbids the rich as well as the poor to sleep under bridges." In theory, copyright covers the creations of celebrities and obscurities equally, but only major distribution companies have the resources to defend their property rights in court. In a sense, this is quite fair, because nobody wants to steal unpopular music, but by supporting the property rights of celebrities, copyright strengthens them as a class in contrast to anonymous musicians.Internet music file sharing has become a significant factor in the social lives of children, who download bootleg music tracks for their own use and to give as gifts to friends. If we are to believe one recent poll done by a marketing firm rather than social。

华南理工大学839高分子物理2018年考研初试真题

A. 最小 B. 居中 C. 最大 D. 不能确定
（）17、下列聚合物中，柔性最大的是（）。
A. 聚氯乙烯 B. 聚氯丁二烯 C. 聚苯乙烯
（）18、下列聚合物中，最容易结晶的是（）。
A. 聚对苯二甲酸乙二酯 B. 聚邻苯二甲酸乙二酯
乙二酯
第4页
C. 聚间苯二甲酸
（）19、聚丙烯的熔融过程和聚苯乙烯的玻璃化转变过程分别是（）。 A. 都是力学状态转变过程 B. 都是热力学相变过程 C. 前者是热力学相变过程，后者是力学状态转变过程
（）8、高分子的特性黏数随溶剂化作用增大而（）。

A. 增大 B. 不变 C. 降低 D. 不确定
（）9、拉伸强度的单位是（）。 A. N B. N/m2 C. 无量纲
D. N/m
（）10、晶态聚合物发生强迫高弹形变的温度范围为（）。
第3页
A. TbTg B. TbTm C. TgTm D. TgTd （）11、在温度下，用膜渗透压法测定聚合物相对分子质量，以/RTc 对 c 作图，得到的直线斜率（）。
5、取向
6、支化度
7、熔体破裂
8、特性黏度
9、Avrami 指数
10、应变软化
二、判断题（正确的在括号里打√，错误的打；每题 1 分，共 25 分）（）1、天然橡胶溶解于正庚烷是符合高分子溶剂的溶剂化原则，PVC 溶解于环己酮是符合高分子溶剂选择的极性相近原则。（）2、橡胶拉伸过程中的应力应变关系符合胡克定律。（）3、玻璃化转变是热力学上的相转变。（）4、玻璃态高聚物的强迫高弹形变与橡胶的高弹形变本质上是一样的。（）5、聚丙烯球晶的晶粒尺寸越大，它的透明性越差，但冲击性能越好。（）6、在较大的压力下观察到高聚物的 Tg 提高了。

2018年华南理工大学研究生入学考试专业课真题880_分析化学

880华南理工大学2018 年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：分析化学适用专业：分析化学共13 页一、单项选择题【1-20 题每题1 分，21-30 题每题2 分】1. 按照酸碱质子理论，Na2HPO4是（）A．中性物质B．酸性物质C．碱性物质D．两性物质2. 下列有关随机误差的论述中不正确的是（）A．随机误差是由一些不确定的偶然因素造成的B．随机误差出现正误差和负误差的机会均等C．随机误差在分析测定中是不可避免的D．随机误差具有单向性3. 用氧化锌标定EDTA 溶液时，下列操作会导致EDTA 浓度偏高的是（）A．氧化锌未进行干燥B．滴定管洗净后，未用EDTA 溶液润洗C．滴定完成后，最终读数时，发现滴定管挂水珠D．最终读数时，终点颜色偏深4. 间接碘量法测定可溶性铜盐时，若放置一段时间后出现“回蓝”现象，则可能是由于（）A．反应不完全B．空气中O2氧化I-C．氧化还原反应速度慢D．淀粉指示剂变质5. 摩尔法测定Cl-，控制溶液pH=4.0，其滴定终点将（）A．不受影响B．提前到达C．推迟到达D．刚好等于化学计量点6. 用高锰酸钾法测定铁，一般使用硫酸而不是盐酸调节酸度，其主要原因是（）A．盐酸有挥发性B．硫酸可以起催化作用C．盐酸强度不够D．Cl-可能与KMnO4 反应7. AgCl 在0.01mol/L HCl 中溶解度比在纯水中小，是（）的结果。

A．共同离子效应B．酸效应C．盐效应D．配位效应8. 氧化还原反应的条件平衡常数与下列哪个因素无关（）A．氧化剂与还原剂的初始浓度B．氧化剂与还原剂的副反应系数C．两个半反应电对的标准电位D．反应中两个电对的电子转移数9. pH 玻璃电极使用前必须在水中浸泡，其主要目的是（）A．清洗电极B．活化电极C．校正电极D．清除吸附杂质10. 用氟离子选择性电极测定水中（含有微量的Fe3+、Al3+、Ca2+、Cl-）的氟离子时，应选用的离子强度调节缓冲溶液为（）A．0.1 mol/L KNO3B．0.1 mol/L NaOHC．0.1 mol/L 柠檬酸钠（pH 调至5-6）D．0.1 mol/L NaAc（pH 调至5-6）11. 在正相色谱柱上分离含物质1,2,3 的混合物，其极性大小依次为：物质1>物质2>物质3，其保留时间t 的相对大小依次为（）A．t1>t2>t3B．t1<t2<t3C．t2>t1>t3D．t2<t1<t312. 常用于评价色谱分离条件选择是否适宜的参数是（）A．理论塔板数B．塔板高度C．分离度D．死时间13. 在符合朗伯-比尔定律的范围内，有色物质的浓度、最大吸收波长、吸光度三者的关系是（）A．增加、增加、增加B．减小、不变、减小C．减小、增加、增加D．增加、不变、减小14. 下列仪器分析方法中适宜采用内标法定量的是（）A. 紫外-可见分光光度法B. 原子吸收光谱法C. 色谱分析法D. 极谱分析法15. 用0.10 mol/L NaOH 滴定同浓度HAc（pKa=4.74）的pH 突跃范围为7.7~9.7。

华南理工大学868经济学(含宏观、微观)2014-2018年考研专业课真题试卷

精都教育——全国 100000 考生的选择
我们的梦想，为成就更多人的梦想
华南理工大学研究生入学考试试题
原版考研真题试卷
更多考研真题、笔记、模拟、题库、讲义资料就上精都考研网 /
华南理工大学2018年考研专业课真题试卷（原版）
四、论述题（每题 20 分，共 40 分） 1.评述经济学中关于经济周期成因的主要观点。 2.简述供给学派的主要观点及其对中国供给侧结—全国 100000 考生的选择
我们的梦想，为成就更多人的梦想
华南理工大学研究生入学考试试题
原版考研真题试卷
更多考研真题、笔记、模拟、题库、讲义资料就上精都考研网 /
华南理工大学2017年考研专业课真题试卷（原版）
868 华南理工大学
2017 年攻读硕士学位研究生入学考试试卷
（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：经济学（含宏观、微观）适用专业：国民经济学；区域经济学；金融学；产业经济学；国际贸易学；数量经济学
第 1页
华南理工大学2018年考研专业课真题试卷（原版）
三、计算题（第 1 题 12 分，第 2 题 8 分，共 20 分） 1.假设：小麦需求函数为 QD =35.5 2.66P ，供给函数为 QS =18+2.4P ，为了保护农场主利益，政府设定最低价格为 3.7 元，并按此价格收购市场上剩余小麦。（1）求政府收购的小麦数量。（2）求消费者剩余变动量。（3）求生产者剩余变动量。（4）求政府的成本。 2.某商品市场需求曲线为 P 100 2Q ，市场有 2 个厂商，其总成本函数都为TC(q) 4q ，q 为厂商生产数量。（1）求古诺均衡解。（2）求厂商 1 为领导者，厂商 2 为追随者的斯塔克尔伯格解（产量领导）。

华南理工大学2018年《837印刷材料及适性》考研专业课真题试卷

第
1 页
2、纤维素是由什么组成的线性高分子，写出纤维素结构式。 3、简述颜料在连接料中的浸湿过程及自由能的变化（给出公式）。 4、简要有哪些指标来评价。四、论述题（每题 20 分，合计 40 分） 1、论述印刷过程中纸张对油墨的吸收过程（阶段），并给出每个阶段的油墨吸收公式。 2、说明油墨触变性的表现及定义，分析油墨触变性的产生机理。
837
华南理工大学 2018 年攻读硕士学位研究生入学考试试卷
（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回）科目名称：印刷材料及适性适用专业：制浆造纸工程；轻工技术与工程(专硕) 共 2 一、填空题（每个填空 2 分，合计 20 分。请将答案按照编号写到答题纸上） 1、纸张的印刷性能是以印刷过程中（1）、（2）和（3）之间的相互作用为基础的。 2、纸张的（4）和（5）是影响纸张印刷质量的两个重要性质，两者之间有一定关系，但又是纸张的两个不同特性。 3、油墨的连接料赋予了油墨（6）、（7）；同时它又是一种（8），颜料要依靠连接料的（9）牢固的附着于承印物表面，并使墨膜耐摩擦，有（10）。二、概念题（每题 4 分，合计 40 分。请将答案写到答题纸上） 1、木素； 2、特殊涂料纸； 3、纸张的表面强度； 4、印刷平滑度； 5、树脂型连接料； 6、渗透干燥； 7、油墨的光学性质； 8、数字印刷油墨； 9、CTP 版； 10、无水胶印油墨。三、简答题（每题 10 分，合计 50 分） 1、纸张印刷性能的评价主要有哪几种方法。页
第
2
页

华南理工大学836流体力学与传热2014-2018年考研专业课真题试卷

图 1 不同管径的管内流速
第 1页
华南理工大学2017年考研专业课真题试卷（原版）
2. 已知二维平面流动的流速分布为：ux 4y 6xt ，uy 6y 9xt 。试回答以
下问题：①当 t=2 时，流场中的点（2,4）处的加速度；②判别流动是否是定常流动？
是否是均匀流？（10 分）
3. 已知船舶模型的长度比例尺 kl 40 ，当模型在水槽中以 1.2m/s 的速度运动时，测
m2/s， Pr =3.54， =0.648W/(m·K)）
2. （15 分）一换热器，水以 0.4m/s 的速度在管内流动，进口温度为 20℃，被加热到 60℃。压力为 0.4736 105Pa 的饱和水蒸气在管外凝结，每小时的蒸汽量为 1000kg，蒸汽侧的凝结表面换热系数为 13740 W/(m2·K)，换热管外径 25mm，壁厚 1.5mm，
精都教育——全国 100000 考生的选择
我们的梦想，为成就更多人的梦想
华南理工大学研究生入学考试试题
原版考研真题试卷
更多考研真题、笔记、模拟、题库、讲义资料就上精都考研网 /
华南理工大学2018年考研专业课真题试卷（原版）
4. 写出伯努利方程，解释各项的物理含义以及其适用条件。
三、计算题（共 80 分） 1.（10 分）水以 1.5 m/s 的速度流过内径为 25 mm 的加热管。管的内壁温度保持 100℃，水的进口温度为 15℃。若要使水的出口温度达到 85℃，求单位管长的换热量。（已知：
湍流时管内强制对流换热公式 Nu 0.023Re0.8 Pr0.4 ，水在 50℃时 =0.56610-6
二、问答题（每题 10 分，共 40 分）
1. 分别写出 Re 、 Fo 、 Bi 、 Nu 、 Pr 各准则的表达式，并阐述其物理意义。

2018年华南理工大学研究生入学考试专业课真题860_普通物理(含力、热、电、光学)

-m2 V 1 .线温等为CG线虚中图’hu la－'P Lw h －G R 俨l i l －－L rn Ef $4过Ch ！－OL W ’r E’1程判是Md 川热吸口玉咄L 还’过体－线热气，肉强吸阳山 l 姥色刷拙J ：i线柑川机川川执…M热勾虚两这断 · 队放但吸 F F 吸程中惆热程程放叩2阳－1 ．860华南理工大学2018 年攻读硕士学位研究生入学考试试卷（试卷上做答无效，请在答题纸上做答，试后本卷必须与答题纸一同交回〉。

d科目名称：普通物理（含力、热、电、光学）适用专业：理论物理：凝聚态物理：声学：光学；材料科学与工程：物理电子学：共 f 页。

;7' v材料工程（专硕）一、选择题（共 48 分，每题 4 分〉l 、几个不同倾角的光滑斜面，有共同的底边，顶点也在同一坚直面上．若使一物倒（视为质点）从斜面上端由静止滑到下端的时间最短，则斜面的倾角应选(A) 60。

. (B) 45° . (C) 30。

.(D) 15。

．［］2、某物体的运动规律为 d v / d t = -k v 勺，式中的 k 为大于零的常量．当t = O 时，初速为 Vo ，则速度 U 与时间 t 的函数关系是(D) abc 过程和 def 过程都放热．［］6、一定量的理想气体经历二cb 过程时吸热500 J. 则经历 cbda 过程时，吸热为(A ）马200 J. (B ）一700 J.p （×105 Pa)(A) v=kt 2 叫(C) -400 J .(D) 700 J.。

V （ 10-3 m3)1 kt2 1(C) 一＝－－：：－－＋一’ ， U 二L Vo3、一质量为 m 的质点，在半径为 R 的半球形容器中，由静止开始自边缘上的 A 点滑下，到达最低点 B 时，它对容器的正压力为N. 则质点自 A℃!57［］47、一铜板厚度为 D= l .OO mm ，放罩在磁感强度为 B= 1.35 T 的匀强磁场中，磁场方｜向垂直于导体的侧表面，如图所示，现测得铜板上下两面电势差为 V=1.10×10 5 v ，己B 知铜板中自由电子数密度 n =4.20 ×102s m 3, 滑到 B 的过程中，摩擦力对其作的功为A(A）护（N 训电子电荷 e=l.60 ×10-19 c，则此铜板中的电歹争叶阳一mg ) .(D)i R( N 切）［］8、如图所示．一电荷为 q 的点电荷，以匀角速度ω作圆周运动，圆周的半径为 R. 设 t = O 时 q 所在点的坐标为 xo = R , 4、如图，两木块质量为 m1 和叫，由一轻弹簧连接，放在光滑水平桌面上，先使网木块靠近而将弹簧压紧，然后由静止释放．若在弹簧伸长到原长时，m1 的速率为 V1,则弹簧原来在压缩状态时所具有的势能是o = O ，以T , ］分别表示 x 轴和 y 轴上的单位矢景，则圆心处点的位移电流密度为：1 m1 + m2 2总二点点达-2.口._L 二sm w t Iqw『x(i )(A) 一m 1V12(B) (A)(B)一一一τcos mt J2 m1 4 π R 24πRqw -qw-1 m1 + m2 z(C)一一k(D)一丁（sin wti - c os mtj) (C)三（m1 + m2 ) V 1 .(D ) -m1V 1 . 4πR 22 m24πR第页第 2 页\Y i u )－E Er 饨A ～「， D G的一市民川r E F图nu 品UF 历经。