试题与答案

约定在字符编码的传送中采用偶校验,若接收到代码11010010,则表明传送中( )

题型:单项选择题

题目:

约定在字符编码的传送中采用偶校验,若接收到代码11010010,则表明传送中( )。

A.未出现错误

B.出现奇数位错

C.出现偶数位错

D.最高位出错

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0606/085276314d1f40793264223d09ab6f73.html

下面是错误答案,用来干扰机器的。

参考答案:D解析:人类嗜T细胞病毒(HTLV),有Ⅰ型(HTLV-Ⅰ)和Ⅱ型(HTLV-Ⅱ)之分,分别是引起T细胞白血病和毛细胞白血病的病原体。属反转录病毒科的RNA肿瘤病毒亚科。HTLV可通过输血、注射或性接触等途径传...

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题型:填空题

氮及其化合物在工农业生产、生活中有者重要作用。请回答下列问题:

(1)图1是1molNO2和1molCO反应生成CO2和NO过程中能星变化示意图(a、b均大于0,)且知:2CO(g)+2NO(g)=N2(g)+2CO2(g)△H=-ckJ·mol-1(c>0)

请写出CO将NO2还原至N2时的热化学方程式____________;

(2)图2是实验室在三个不同条件的密闭容器中合成氨时,N2的浓度随时间的变化曲线(以a、b、c表示)。已知三个条件下起始加入浓度均为:c(N2)=0.1mol·L-1,c(H2)=0.3mol·L-1;合成氨的反应:N2(g)+3H2(g)2NH3(g)△H<0

①计算在a达平衡时H2的转化率为______;

②由图2可知,b、c各有一个条件与a不同,则c的条件改变可能是______;

试写出判断b与a条件不同的理由____________;

(3)利用图2中c条件下合成氨(容积固定)。已知化学平衡常数K与温度(T)的关系如下表:

①试确定K1的相对大小,K1______4.1x106(填写“>”“-”或“<”)

②下列各项能作为判断该反应达到化学平衡状态的依据的 是______(填序号字母)。

A.容器内NH3的浓度保持不变  B.2v(N2)(正)=v(H2)(逆)

C.容器内压强保持不变   D.混合气体的密度保持不变

(4)①NH4Cl溶液呈酸性的原因是(用离子反应方程式表示 )______。

②250C时,将pH=x氨水与pH=y的疏酸(且x+y=14,x>11)等体积混合后,所得溶液中各种离子的浓度关系正确的是

A.[SO42-]>[NH4+]>[H+]>[OH-]

B.[NH4+]>[SO42-]>[OH-]>[H+]

C.[NH4+]+[H+]>[OH-]+[SO42-]

D.[NH4+]>[SO42-]>[H+]>[OH-]

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题型:单项选择题

Sigmund Freud


If there is a single name in all psychology that is synonymous with personality theory, it is Sigmund Freud. Born on the Continent in 1856, he spent his early years as a member of a tightly knit family in Central Europe. Reportedly, his youth was marked by serious personality problems, including severe bouts with depression and anxiety states. These difficulties apparently started him on a journey of discovery aimed at understanding the roots of personality and gaining insight into the relationship between personality structure and actual behavior. It was to be a long and productive professional journey, beginning with his graduation from medical school at the University of Vienna in 1881. His career extended all the way to the beginning of World War Ⅱ in 1939.
After completing his medical studies, he became increasingly interested in diseases of the nervous system. Instead of continuing to look for physical and physiological reasons, he shifted his attention toward a new arena, the mind. If diseases such as hysteria, high-anxiety states, and deep personal depression were not connected to a physical cause, then the usual types of medical treatment, from actual operations on nerves to prescriptions for drugs, were bound to fail. Such activities were merely treating symptoms. Often, after these treatments, patients simply developed a new set of symptoms. As a result of these ideas, Freud decided to study with Joserf Breuer, a physician famous for his treatment of hysteria through hypnosis. Freud found that inducing hypnotic trances was somewhat limited as a treatment of choice. Some patients could not be successfully hypnotized and others simply shifted symptoms.
Freud began to experiment with unique treatment methods, primarily asking patients to free-associate and to report on their dreams. In some ways this appeared an outrageous procedure for a physician to use. Imagine Freud asking a patient to stretch out on his soon-to-be-famous couch, then suggesting that he or she say whatever came to mind. (The first rule of psychoanalysis was to speak out and not repress any hidden thoughts). All the while Freud himself was sitting behind the couch quietly jotting down notes, rarely speaking. Such a procedure seemed the work of a mad genius at best or of a charlatan at worst. Not only did Freud break with the traditions of his time completely, but he even went so far as to carry on psychoanalytically oriented treatment via the mail to the father of a child patient. In the famous case of little Hans, he successfully treated a young boy by writing to the father and explaining step-by-step how to cure the patient of a severe case of horse phobia. Since horses provided most transportation in those days, Hans’ malady can be compared to a child who today would run and hide at the sight of an automobile.
Always an innovator, Freud continued to evolve creative treatment techniques throughout his life; however, his major contribution was his insight into the causes of behavior. Through hours of quiet listening to patients’ free associations and dreams, he began to construct a theory of personality. He heard the same themes repeated over and over again and in time created his theory of infant sexuality. Adult patients were helped to gradually recall early feelings, thoughts, and sexual fantasies from their childhood. To suggest to the world that innocent little children had such sexual feelings was almost too much for the Victorian age to accept. Nevertheless, despite the enormous criticism generated and the departure of some of his closest associates, Freud continued to expand on the importance of sexuality as a determinant of personality during the early years of life. His three-part typology of the mind—the id, the ego, and the superego—combined with his three layers of conscious, preconscious, and unconscious led to his famous dictum that all human behavior was over determined. His clinical approaches demonstrated that our present behavior is related to a whole series of causes. The task of the psychologist is to uncover great amounts of psychic material and then gradually help the patient understand how many of the factors from the past had been regulating his or her present behavior. In fact, Freud said that the psychologist is like an archaeologist-carefully and systematically digging through the past in order to slowly uncover the intrapsychic traumas of a person of early history. Here he found the structure of the past influencing present behavior; here was the repository of events, feelings, disconnected ideas, fantasies rooted in the unconscious.
The unconscious, according to Freud, is the key to human behavior. Even though individuals may try to suppress or repress inner thoughts and feelings and push them into the unconscious, the repressed material sneaks out in disguised form. Slips of the tongue, unfortunate accidents, forgetting important events, getting names of familiar people mixed up, and similar people mixed up, and similar unusual human behavior are not just incidental activities or randomly determined. He was able to show how such events are instead a direct expression of an individual’s unconscious motivation. For example, a guilt-ridden criminal might "accidentally" leave a trail a mile wide from the scene of a crime in order to bring about his own punishment. Other examples abound in everyday life.
The insights of Freud changed our level of understanding in dramatic ways. It has been said that the greatest contribution was to end, once and for all, the age of innocence. Also, some have remarked that it would have been impossible to understand the horrors of the twentieth century without his theories of why and how people react. These theories demonstrated the importance of both sexual and aggressive human drives. The adverse interpersonal relationships so common in this age are current reminders of this insight. The desolation created by two major world wars, the total annihilation of innocent populations, the use of ultimate weapons from A-bombs to gas chambers—these products of a so-called advanced civilization can be better understood through his views. It is to be hoped that his insights will teach the world the importance of recognizing and gradually developing control over these destructive human drives. Ironically, he spent many of his last years as a captive of the most demonic human being of this century in Nazi Germany. His final year of life was spent in England in 1939. He watched the world he knew collapse once again in a paroxysm of hatred, tragic testimony to his deepest fears for humanity.

The one major thing that made Freud differ from most other phychologists of his time is that ______.

A. he devoted more efforts than other psychologists on improving the techniques of treatment of mental patients
B. he had a different perception and vision, went in a different direction of research, discovered a new area and originated a "brand-new" treatment of mental patients
C. he made more experiments on mental patients and used more techniques in treating mental patients
D. He adopted an anti-traditional approach in both research and treatment instead of following the prevailing method used by other psychologists

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