问题 多项选择题

自动定向机的安装误差()。

A.产生的原因是指示器的指示与罗差补偿器指针的指示不一致

B.在任何方位上的误差为一致性的等值误差

C.是由于环形天线底座安装不准确所导致的误差

D.是由于罗差补偿器安装不准确所导致的误差

答案

参考答案:A, B, C, D

阅读理解

Many people go to school for a good education . They learn languages ,history ,maths and other lessons . School education is very important and useful . Yet no one can learn everything from school . No matter how much a teacher knows , he cannot teach his students everything they want to know . His work is to show his students how to learn . He teaches them how to read and how to think . So , much more is to be learned outside school by the students themselves .

It is always more important to know how to study by oneself . It is quite easy to learn something in a language or a formula in maths , but it is difficult to use a formula in finding the answer to a maths problem . Great inventors do not get everything from school but they can invent many things and change the world a lot . Though Thomas Edison invented many things he didn’t have much school education . How do they do all these ? Because they know how to study . A lot of things are not taught in the classroom . They get knowledge from books outside school . They work hard all their lives , and the most important thing is that they know how to use their head .

31. What do many people go to school for ?

A. To make friends                  B. To get everything

C. To get a good education            D. To study by themselves

32. What should a student learn to do from school ?

A. Try to remember more knowledge and formulas .

B. Try to learn how to read and how to think . 

C. Try to remember what the teachers teach .

D. Try to invent the world .

33. How can an inventor invent things ? The most important thing is how

to         .

A. be a great inventor                B. study by himself

C. use his head well                  D. remember what he’s been taught

34. The word formula in this passage means          .

A. 数学题       B. 公式        C. 几何图形        D. 数学用表

35. Which of the following shows the most important idea of this passage ?

A. School education is important for a person .  

B. A student can not learn everything from school .

C. A student should learn how to remember a formula .

D. Inventors can invent things and change the world a lot .

选择题

近十年来,我国重工业发展迅速,重工业增长值长期占工业增长值的60%以上,尤其是钢铁、汽车、化工等重化工业得到了加速发展。我国能源利用率较低,单位GDP能源消耗远远高于世界平均水平。下图为“山西省煤炭的综合利用图”。据图回答1—3题。

1.目前,我国重化工业加速发展所带来的问题主要有

①环境污染加剧②水土流失、荒漠化严重

③资源和能源的消耗量大④耕地面积减少,劳动力短缺 [     ]

A.①②

B.③④

C.②④

D.①③

2.山西省围绕煤炭开发,充分利用本省丰富的铝土、铁矿资源,构建了几条产业链,实现了资源的综合利用。但其经济结构单一,重化工业所占比重大,给当地生态环境造成了严重破坏。下列符合该省今后产业结构调整方向的是

①延长生产加工链,使产品向深加工、高附加值方向发展

②加大力度开采地下丰富的煤炭、铝土和铁矿等资源,提高矿产资源销售价格

③封闭矿山,关停所有的重化工业企业,使生态环境迅速转向优良

④大力发展轻工业和第一、三产业,降低重化工业所占的比重  [     ]

A.①②

B.③④

C.①④

D.②③

3.针对目前我国单位GDP能耗、物耗远远高于世界平均水平的现状,需要采取的措施有

①加强技术和生产工艺上的革新,提高能源和资源的利用率

②对紧缺的矿产资源停止开发,加大对储量丰富的资源的开发力度

③发展资源和能源消耗较小的高新技术产业

④加大重污染、高能耗企业的劳动力投入 [     ]

A.①②

B.③④

C.②④

D.①③