根据保护装置反应的物理量可分为哪几种保护?

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问题:

根据保护装置反应的物理量可分为哪几种保护?

考点:铁路知识考试电气化铁道供电系统电气化铁道供电系统题库
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若要求在文本框中输入文本时达到密码“*”的显示效果,则应该设置的属性是

A.默认值

B.有效性文本

C.输入掩码

D.密码

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下列有机物的系统命名中正确的是

A.3-甲基-4-乙基戊烷

B.3,3,4-三甲基己烷

C.3-乙基-5-辛烯

D.3-乙基-1-甲基苯

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One of the most disturbing statistics I’ve read for a long time was published this week. The Work Foundation claims that job satisfaction in this country has fallen alarmingly. Women’s satisfaction level has fallen from 51 percent in 1992 to 29 percent today; men’s has fallen from 35 percent to 20. The reason — the long-hours culture and job insecurity.
For my father’s generation, work was something that had to be endured so that real life could be maintained. But my generation has been gulled into thinking that work is real life, Most work is not satisfying. Most work stinks. Most work, however well paid, is meaningless and dull. But somehow we’ve been convinced that work provides self-fulfillment.
Before Mrs Thatcher, we had a famous British attitude to work — the less we did the better. Thatcher introduced the idea that, in a world where identity was so fragile, you could become real through work, through long hours and assiduous consumption, in the small amount of time you had been left after clocking off. Now Blair carries on the crusade, I’ve got one of the best jobs in the world — sitting in an office by myself all day trying to make up something that someone somewhere will be interested in. But I’d rather be stretched out in front of the TV, or in bed, or playing tennis, or doing just about anything else.
Much of feminist thought has been about getting what men have traditionally had without examining the underlying assumption of whether it was worth having. Feminism never ended up with a life built around creative leisure, instead, women of talent and drive threw themselves into the labour pool, believing that work and its attendant income and power would affect the change of life and consciousness that would liberate them.
Can anything be done Only if we’re willing to change the way we’ve been tricked into thinking. Most people now measure their lives primarily in units of currency — money saved and spent. I have a friend who’ll travel halfway across London for a shoe sale, without factoring in how much of her precious time has been spent travelling. The most important truth I know is that all we ever own is the time we were given on this earth. We need to seize it back. Now the future has arrived, and we have the means to do it — we just don’t have the imagination.

Which of the following is the most appropriate title for the passage

A.(A) What’s So Good about Hard Work

B.(B) What’d You Imagine for the Future

C.(C) Work Makes Everyone Free.

D.(D) Seize Time Back for Your Own Sake.

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动脉导管未闭,在婴幼儿期或形成肺动脉高压或合并心衰时,常见()

A.胸骨左缘第2肋间连续性杂音

B.胸骨左缘第4肋间连续性杂音

C.胸骨左缘第4肋间舒张期杂音

D.胸骨左缘第2肋间收缩期杂音

E.胸骨左缘第2肋间舒张期杂音

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从事货物生产或提供应税劳务的纳税人,年应税销售额在()万元以上可认定为一般纳税人

A、80

B、100

C、150

D、180

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