试题与答案

在古代,美术被称为()。古希腊哲学家柏拉图把理念设定为世界的最高本体,是万物产生之源

题型:单项选择题

题目:

在古代,美术被称为()。古希腊哲学家柏拉图把理念设定为世界的最高本体,是万物产生之源,艺术不过是理念的映像和再现。

A.绘画的艺术

B.造型的艺术

C.模仿的艺术

D.大众的艺术

答案:

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参考答案:汽轮机起动或停机时,汽缸与转子均会受热膨胀,受冷收缩。由于汽缸与转子质量上的差异,受热条件不相同,转子的膨胀及收缩较汽缸快,转子与汽缸沿轴向膨胀的差值,称为差胀。差胀为正时,说明转子的轴...

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题型:阅读理解

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There have been many great men in history. But many of them were very poor in childhood, and had no uncles, aunts or friends to help them. They couldn't depend on them for education. They saw how it was, and began to work with their efforts.

One of the most famous teachers in England used to tell his pupils, "I can't make worthy men of you, but I can help you make men of yourselves."

Some young men are not the best in anything, and they are to be pitied(值得同情的). They can never do things successfully if they don't see their weak points and change their courses(做法). They are nothing now, and will be nothing as long as they live if they don't follow the advice of their parents and teachers, and depend on their own efforts.

小题1:"Depend on yourself" in this passage means ________.      

A.depend on your own efforts

B.depend on nature

C.wait for others to help

D.depend on your parents小题2:Many of the great men in history succeeded because________.  

A.they were very poor in childhood

B.they could not depend on schools for an education

C.they made great efforts to learn and work

D.they wanted very much to become famous小题3:According to the famous teacher in England, a teacher can _______.     

A.make his pupils worthy men

B.teach his pupils everything he knows

C.help his pupils make themselves useful men

D.make his pupils men of strength and courage小题4:If young people depend on their own efforts, ____________  

A.they are to be pitied

B.they can never be successful

C.they are nothing now and will be nothing in the future

D.they can be successful in their work小题5:The main idea of the passage is that         .

A.we should depend on our parents and teachers

B.we can depend on our friends and relatives

C.all great men in history were poor when they were young

D.we can't depend on our parents or teachers, but we can get advice from them

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题型:问答题

一质量为10kg的木楔ABC静止在粗糙的水平面上,物块与斜面动摩擦因素为0.2,在倾角为θ=37°的木楔斜面上,有一质量为1kg的物块,以初速度为v=7.6m/s开始沿斜面上滑,在这一过程中,木楔始终处于静止状态.(取g=10m/s2,sin37°=0.6,cos37°=0.8),求:

(1)物块在斜面上运动时的加速度a;

(2)物块上升到最高点所需的时间t;

(3)在物块向上运动时地面给木楔的摩擦力f和支持力N各是多少.

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