交换系统使用的交流电源线两端腾空时,用500v兆欧表测试芯线间和芯线对地的绝缘电阻均

题型:单项选择题

问题:

交换系统使用的交流电源线两端腾空时,用500v兆欧表测试芯线间和芯线对地的绝缘电阻均不得小于()。

A.1KΩ

B.10KΩ

C.1MΩ

D.10MΩ

考点:通信工程师固定电话维修固定电话维修题库
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中国的农业文明居世界前列,世界上最早种植水稻的原始居民是   [ ]

A.山顶洞人    

B.半坡原始居民    

C.河姆渡原始居民    

D.大汶口原始居民

题型:单项选择题

(1)3.01×1022个OH-的物质的量为______质量为______,这些OH-与______mol NH3的质量相等,与______g Na+含有的离子数相同;

(2)将4.6g金属钠在空气中充分燃烧得到淡黄色粉末,该粉末与水反应能够放出标准状况下的气体______L,实验后所得溶液中Na+的物质的量为______;

(3)同温同压同体积的氨气(NH3)和硫化氢(H2S)气体的物质的量之比为______,原子个数之比______.

题型:单项选择题

下列关于不计算建筑面积范围所包括的内容错误的是( )。

A.突出外墙的垛
B.地下人防通道
C.层高2.3m的贮藏室
D.突出外墙的悬挑雨篷

题型:单项选择题

细胞呼吸对生命活动具有重要意义,下列有关细胞呼吸的叙述正确的是()

A.线粒体是有氧呼吸的主要场所,没有线粒体的细胞只能进行无氧呼吸

B.有叶绿体的细胞可自行合成ATP,因此不需要细胞呼吸提供能量

C.动物细胞呼吸停止便不能合成ATP,作为生命基本特征的新陈代谢就此终结

D.细胞呼吸中有机物的分解必须有水和氧气的参与才能释放储存的能量

题型:单项选择题

It is true, as the movement critics assert, that the present women’s liberation groups are almost entirely based among "middle class" women, that is, college and career women; and the issues of psychological and sexual exploitation and, to a lesser extent, exploitation through consumption, have been the most prominent ones.

It is not surprising that the women’s liberation movement should begin among bourgeois women, and should be dominated in the beginning by their consciousness and their particular concerns. Radical women are generally the post war middle class generation that grew up with the right to vote, the chance at higher education and training for supportive roles in the professions and business. Most of them are young and sophisticated enough to have not yet had children and do not have to marry to support themselves. In comparison with most women, they are capable of a certain amount of control over their lives.

The higher development of bourgeois democratic society allows the women who benefit from education and relative equality to see the contradictions between its rhetoric (every child can become president) and their actual place in that society. The working class woman might believe that education could have made her financially independent but the educated career woman finds that money has not made her independent. In fact, because she has been allowed to progress halfway on the upward-mobility ladder she can see the rest of the distance that is denied her only because she is a woman. She can see the similarity between her oppression and that of other sections of the population. Thus, from their own experience, radical women in the movement are aware of more faults in the society than racism and imperialism. Because they have pushed the democratic myth to its limits, they know concretely how it limits them.

At the same time that radical women were learning about American society they were also becoming aware of the male chauvinism in the movement. In fact, that is usually the cause of their first conscious 100 verbalization of the prejudice they feel; it is more disillusioning to know that the same contradiction exists between the movement’s rhetoric of equality and its reality, for we expect more of our comrades.

This realization of the deep-seated prejudice against themselves in the movement produces two common reactions among its women: 1) a preoccupation with this immediate barrier (and perhaps a resultant hopelessness), and 2) a tendency to retreat inward, to buy the fool’s gold of creating a personally liberated life style.

However, our concept of liberation represents a consciousness that conditions have forced on us while most of our sisters are chained by other conditions, biological and economic, that overwhelm their humanity and desires for self-fulfillment. Our background accounts for our ignorance about the stark oppression of women’s daily lives.

The author implies in the last paragraph that()

A. most women can retreat from the liberation movement too

B. most women have a p desire for self-fulfillment as we do

C. most women are eager to be liberated by us from oppression

D. most women couldn’t create the liberated life style as we do

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