下列关于局域网传输介质的叙述中,正确的是______。A.局域网常用的传输介质有同轴

题型:单项选择题

问题:

下列关于局域网传输介质的叙述中,正确的是______。

A.局域网常用的传输介质有同轴电缆、双绞线、光纤和无线通信信道

B.局域网的传输介质有双绞线和卫星通信

C.局域网的传输介质只能使用双绞线和同轴电缆

D.以上说法都不对

考点:计算机等级考试网络技术三级网络技术笔试
题型:单项选择题

一个农民在集市上买了一头牛花了600元,转手以640元卖给了别人,随后他又以650元买回了这头牛.过了不久,这个农民又以640元把牛卖了,最后他又以600元把这头牛买回来.这个农民买这头牛实际花了______元.

题型:单项选择题

选出下列各项中加点的文言词语解释不当的一项:()

A.至于今,郡之贤士大夫请于当道(古:到;今:表示达到某种程度,或表示另提一事)

B.是时以大中丞抚吴者为魏之私人(古:仆人;今:指与公家相对的个人)

C.吴之民方痛心焉(古:痛于心,痛恨;今:极端伤心)

D.非常之谋难于猝发(古:非同寻常;今:程度副词,十分,极)

题型:单项选择题

Passage 1 is from the introduction to a Zen Buddhist (禅宗的佛教僧侣) manual on the art of “mindfulness”, the practice of paying close attention to the present moment. Passage 2 is from an essay by a United States author.

Passage 1

Every morning, when we wake up, we have 24 brand-new hours to live. What a precious gift! We have the capacity to live in a way that these 24 hours will bring peace, joy, and happiness to ourselves and to others.

Peace is right here and now, in ourselves and in everything we do and see. The question is whether or not we are in touch with it. We don’t have to travel far away to enjoy the blue sky. We don’t have to leave our city or even our neighborhood to enjoy the eyes of a beautiful child. Even the air we breathe can be a source of joy.

We can smile, breathe, walk, and eat our meals in a way that allows us to be in touch with the abundance of happiness that is available. We are very good at preparing how to live, but not very good at living. We know how to sacrifice ten years for a diploma, and we are willing to work very hard to get a job, a car, a house, and so on. But we have difficulty remembering that we are alive in the present moment, the only moment there is for us to be alive. Every breath we take, every step we make, can be filled with joy, peace, and serenity. We need only to be awake, alive in the present moment.

Passage 2

The argument of both the hedonist (享乐主义者) and the guru (印度教的宗师)is that we were but to open ourselves to the richness of the moment, to concentrate on the feast before us, we would be filled with bliss. I have lived in the present from time to time and can tell you that it is much overrated. Occasionally, as a holiday from stroking one’s memories or brooding (担忧) about future worries, I grant you, it can be a nice change of pace. But to “be here now,” hour after hour, would never work. I don’t even approve of stories written in the present tense. Ads for poets who never use a past participate, they deserve the eternity they are striving for.

Besides, the present has a way of intruding whether you like it or not. Why should I go out of my way to meet it? Let it splash on me from time to time, like a car going through a puddle, and I, on the sidewalk of my solitude (孤独), will salute it grimly like any other modern inconvenience.

If I attend a concert, obviously not to listen to the music but to find a brief breathing space in which to meditate on the past and future. I realize that there may be moments when the music invades my ears and I am forced to pay attention to it, note for note. I believe I take such intrusions gracefully. The present is not always anunwelcome guest, so long as it doesn’t stay too long and cut into my remembering or brooding time.

小题1:The author of Passage 1 would most likely view the author of Passage 2 as _______.

A.failing to respect the feelings of other people

B.squandering (浪费) a precious opportunity on a daily basis

C.advocating an action without considering the consequences

D.attaching too much importance to the views of others小题2:The author of Passage 1 would most likely respond to the “argument” (line 1 Passage 2) with_______.

A.absolute neutrality

B.partial acceptance

C.complete agreement

D.surprised disbelief小题3:In Passage 1 line 11, the list (“a job…house”) presents things that most people ________.

A.assume they will eventually obtain

B.eventually realize are overrated

C.are unwilling to make sacrifices for

D.see as worth much effort to acquire小题4:In Passage 2 lines 8—10, the “present” is characterized as _________.

A.an unavoidable imposition (强加)

B.an unsolvable puzzle

C.a dangerous threat

D.a burdensome obligation小题5:Which of the following phrases from Passage 2would the author of Passage 1 most likely choose as a title for Passage 1?

A.“the hedonist and the guru” (line 1)

B.“a brief breathing space” (line 11)

C.“the feast before us” (line 2)

D.“an unwelcome guest” (line 14)

题型:单项选择题

送、引风机的工作原理是什么?

题型:单项选择题

赵某孤身一人,因外出打工,将一祖传古董交由邻居钱某保管。钱某因结婚用钱,情急之下谎称该古董为自己所有,卖给了古董收藏商孙某,得款10 000元。孙某因资金周转需要,向李某借款20000元,双方约定将该古董押给李某,如孙某到期不回赎,古董归李某所有。在赵某外出打工期间,其住房有倒塌危险,因此房与钱某的房屋相邻,如该房屋倒塌,有危及钱某房屋之虞。钱某遂请施工队修缮赵某的房屋,并约定,施工费用待赵某回来后由赵某付款。房屋修缮以后,因遇百年不遇的台风而倒塌。年末,赵某回村,因古董和房屋修缮款与钱某发生纠纷。请回答下列问题:

钱某与孙某之间的买卖合同效力如何为什么

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