自动开关能开断较大的短路电流,具有对电路的()保护。A、过载; B、短路; C、过载

题型:单项选择题

问题:

自动开关能开断较大的短路电流,具有对电路的()保护。

A、过载;

B、短路;

C、过载、短路;

D、过电压

考点:电力机车司机考试电力机车司机高级技师电力机车司机高级技师题库
题型:单项选择题

一个人能不能使挫折变为成功是与这个人                       [ ]

A.对挫折的态度是否正确和积极有关    

B.对挫折的承受能力大小有关  

C.是否认真分析产生挫折的原因有关    

D.能否掌握战胜挫折的方法有关

题型:单项选择题

(18分)阅读下列材料:

材料一 标志(logo)是表明事物特征的记号。随着社会经济、政治、科技、文化的飞跃发展,经过精心设计从而具有高度实用性和艺术性的标志,已被广泛应用于社会一切领域,对人类社会的发展与进步发挥着巨大作用和影响。

(1)据材料一,判断这两幅图分别属于哪一机构的标志?(2分)并分析其对人类社会发展与进步的作用。(4分)

材料二  建构时序性的历史知识体系是学好历史的重要方法

(2)依据材料二并结合所学,根据历史发展特征划分阶段;(6分)任意选取其中一个阶段,结合史实说明该阶段的阶段特征。(6分)

题型:单项选择题

某模拟网站的主页地址是:HTTP://localhost/index.htm,打开此主页,浏览“科技知识”页面,查找“科技产品”页面的内容并将它以文本文件的格式保存到考生文件夹下,命名为 KJCP.txt。

题型:单项选择题

Earlier, in the old days, women used to sit at home separated from the outside world. They used to manage the home and look after children. They were free of the responsibility of earning money to support the family, which was left to men.

With the coming of industrialization (工业化) and technological development, the lifestyles of human beings started to change. The needs of human beings started to grow. In this process, women slowly started to move outside the home. Women received the same education as men. Gradually, women slowly started to think independently and participated equally with men in all fields of life, including politics, sports and even military.

With changing environments, the role of women has become more important in society. To match today’s standard of living, it is necessary for both men and women to support the family.

Today, women have been given bigger roles to play in society. They are even taking more responsibility than men. At first, men disagreed with women pursuing (追求) their careers outside the home. However, with growing needs and a shortage of money, they had no other way but to accept the reality.

The financial contributions from women to their families have increased, but in some places, the home is still managed only by women as in the past. It is a challenging task for women to manage both. Women are bearing the stress and suffering mental difficulties with both managing the home and pursuing their careers.

小题1:The best title for the passage would be _________.

A.Women's Responsibility in Society

B.The Changing Social Environments

C.The Changing Role of Women in Society

D.Women's Financial Contributions小题2:Earlier in the old days, women used to do the following EXCEPT _________.

A.wash clothes

B.prepare dinners

C.look after children

D.make money for the family小题3:We can infer from the last paragraph that ______.

A.women don't need to manage the home today

B.women are taking more responsibility than before

C.men still disagree with women pursuing their careers

D.men have begun to do more housework than women

题型:单项选择题

关于釉质发育不全,下列叙述不正确的是()。

A.是指釉质结构出现异常

B.分为釉质发育不全和釉质矿化不良

C.釉质发育不良一般不会造成牙齿实质缺损

D.釉质发育不全和矿化不良可同时存在

E.维生素A、C、D及钙磷的缺乏可造成釉质发育不全

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