简述影响外啮合齿轮泵容积效率的主要因素及提高容积效率的主要方法。

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问题:

简述影响外啮合齿轮泵容积效率的主要因素及提高容积效率的主要方法。

考点:大学试题液压传动与控制液压传动与控制题库
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下列事件中,是必然事件是(  )

A.-个星期有9天

B.小红在元月调考中,数学会获得满分120分

C.今天是星期一,明天是星期二

D.明天武汉市一定下雨

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输入3个数,输出其中最大的公约数,编程序完成上述功能.

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What is freedom? It seems like such a simple question. Freedom is being able to do what you want to do. Allow me to explain it.

I’m tired of working for a living. I’d rather collect taxes. So that’s what I’m going to do: collect a kind of tax. You are ordered to estimate your income from the past 12 months, and write me a check for 1%. I have provided a mailing address for this purpose on my contact page …

What? You have a problem with my plan? Oh, I see. If you have to send me a check for the tax, then I have hurt your freedom to spend that money as you see fit. We have a conflict! And our basic problem is: we cannot enjoy freedom at the same time; we must settle for a limit. But what limit?

Libertarians (自由论者) believe freedom should be based on self-control. They describe freedom as being able to do what you want to do as long as it doesn’t influence the equal right of others to do what they want to do. That is, freedom is being able to do what you like as long as you do not harm another person’s life, liberty or property.

You can build a set of legal and ethical (道德的) rules on the principle of self-control, and libertarians do. Their request for self-control often becomes more important than common sense, or even freedom itself.

The definition rules out the freedom to steal, murder, and so on. Otherwise, you can do whatever you want. There is no problem until you realize that taxation is theft, that war is murder, and that national service is a form of slavery. Since only the government has a legal right to use force, libertarians focus on making the government smaller, or even going without it. The libertarians’ definition of freedom is thus freedom from the government. Isn’t it ridiculous?

小题1:According to the first three paragraphs, the author’s idea of collecting taxes is _________.

A.reasonable

B.responsible

C.unacceptable

D.understandable小题2:The author takes tax-collecting as an example in the passage to prove that freedom is _________.

A.unreal

B.unbelievable

C.achievable

D.limited小题3:In the opinion of libertarians, freedom is realized mainly by _________.

A.the law

B.self-control

C.ethical rules

D.common sense小题4:Which of the following statements is supported by libertarians according to the passage?

A.National service should be canceled.

B.People can do whatever they want.

C.The government should have more power.

D.They should be governed by the government.

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账账核对是对账工作的一项重要内容,下列各项中,不属于账账核对的是( )。

A.账簿记录与会计凭证的核对

B.总分类账簿与序时账簿的核对

C.明细分类账簿之间的核对

D.总分类账簿与所属明细分类账簿的核对

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简述工具性条件反射的形成。

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