下列反应的生成物为纯净物的是[ ] A.甲烷和氯气光照 B.氯乙烯的加聚 C

题型:选择题

问题:

下列反应的生成物为纯净物的是[ ]

A.甲烷和氯气光照   

B.氯乙烯的加聚   

C.乙烯和溴水加成   

D.丙烯和HCl加成

考点:乙烯甲烷
题型:选择题

数控车床刀片或刀具()参数和切削参数要规范化、典型化。

A.工作

B.线性

C.特性

D.几何

题型:选择题

男性,41岁。尿频、尿急、尿痛,伴血尿1个月,一般抗生素治疗无效。既往有肺结核病史。尿检:白细胞30~40个/HP,红细胞20~30个/HP。

在进行物理检查时,最有可能发现的阳性体征是().

A.附睾、前列腺扪及硬结

B.脐左侧压痛

C.下腹部压痛

D.肾区明显压痛及叩击痛

E.肾区膨隆

题型:选择题

患者,女性,37岁。肛门周围瘙痒,肛周皮肤外口反复红肿,流脓,诊断为肛瘘。治疗的最佳方法是()。

A.1:5000高锰酸钾温水坐浴

B.挂线疗法

C.局部换药治疗

D.瘘道搔刮

E.使用抗菌药物

题型:选择题

“会计主管人员”就是通常所说的“会计主管”、“主管会计”。( )

题型:选择题

Questions 65-71 are based on the following passage.
Questions of education are frequently discussed as if they bore no relation to the social system in which and for which the education is carried on. This is one of the commonest reasons for the unsatisfactoriness of the answers. It is only within a particular social system that a system of education has any meaning. If education today seems to deteriorate, if it seems to become more and more chaotic and meaningless, it is primarily because we have no settled and satisfactory arrangement of society, and because we have both vague and diverse opinions about the kind of society we want. Education is a subject which cannot be discussed in a void: our questions raise other questions, social, economic, financial, political. And the bearings are on more ultimate problems even than these: to know what we want in education we must know what we want in general, we must derive our theory of education from our philosophy of life. The problem turns out to be a religious problem.
One might almost speak of a "crisis" of education. There are particular problems for each country, for each civilization, just as there are particular problems for each parent; but there is also a general problem for the whole of the civilized world, and for the uncivilized so far as it is being taught by its civilized superiors; a problem which may be as acute in Japan, in China or in India as in Britain or Europe or America. The progress (I do not mean extension) of education for several centuries has been from one aspect a drift, from another aspect a push; for it has tended to be dominated by the idea of "getting on". The individual wants more education, not as an aid to acquisition of wisdom but in order to get on; the nation wants more in order to get the better of other nations, the class wants to get the better of other classes, or at least to hold its own against them. Education is associated therefore with technical efficiency on the one hand, and with rising in society on the other. Education becomes something to which everybody has a "right", even irrespective of his capacity; and when everyone gets it—by that time, of course, in a diluted and adulterated form—then we naturally discover that education is no longer an infallible means of getting on, and people turn to another fallacy: that of "education for leisure" —without having revised their notions of "leisure". As soon as this precious motive of snobbery evaporates, the zest has gone out of education; for it is not going to mean more money, or more power over others, or a better social position, or at least a steady and respectable job, few people are going to take the trouble to acquire education. For deteriorate it as you may, education is still going to demand a good deal of drudgery. And the majority of people are incapable of enjoying leisure—that is, unemployment plus an income and a status responsibility—in any but pretty simple form—such as balls propelled by hand, by foot, and by engines or tools of various types; in playing cards; or in watching dogs, horses or other men engage in feats of speed and skill.

Satisfactory answers to educational issues cannot be found unless ______.

A.the philosophy of life is seriously researched into

B.we bring into consideration the political and economic significance

C.the financial and economic issue are considered

D.we can inclusively consider the general goal of education

更多题库