问题
问答题 简答题
数控机床上运动正方向的确定原则是什么？
答案
参考答案：
机床的某一运动部件的运动正方向规定为增大工件与刀具之间距离的方向。即刀具靠近工件表面为负方向，刀具远离工件表面为正方向。
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数控机床上运动正方向的确定原则是什么？
参考答案：
机床的某一运动部件的运动正方向规定为增大工件与刀具之间距离的方向。即刀具靠近工件表面为负方向，刀具远离工件表面为正方向。
| 阅读理解。 |
| Sociologists (社会学家), working in western countries, have found that a large number of women wished they had been born men. The number is said to be as high as 60% in Germany. "Women often wish they had the same chances as men have, and think it is still men's world," said Dr James Helen, one of the sociologists who did the study. Many men say that they have more duties than women. A man has to make money to support (养活) his family and to make the important decision, so it is right for men to be paid more. Some are even against their wives working at all. When wives go out to work , they say, the home and children can not be taken good care of. If women take full-time jobs, they won't be able to do what they are best at doing: making a nice home and bringing up the children. Some women disagree. They say they want to get out of their homes and to have freedom (自由) to choose between work and home life. Women have the right of equal pay and equal chances (平等机会). Anne Harper has a very good job. She also believes in "women's liberation (解放) ". "I don't wish I were a man." she says, and I don't think many women do. But I do wish people would stop treating (对待) us like second-class people. At work, for example, we usually do the work that men do but get paid less. There are still a lot of jobs only to men-usually they are the best ones. If you are a man, you have a much better chance of living a wonderful life. How many women scientists are there …or engineers? |
| 1. Many men think _______. |
[ ] |
| A. women can't do what men can B. men have to work much harder than women C. men can make money more easily than women D. women's duty is mainly to do housework at home |
| 2. Some women have different ideas. They say that _______. |
[ ] |
| A. women need chances to go out of the home more often B. women want more freedom in deciding the kind of life they want C. if women are given equal pay, they can do everything instead of men D. women are no longer interested in taking care of their homes |
| 3. Anne Harper didn't wish to be a man _______. |
[ ] |
| A. because she believed in "Women's Liberation" B. but she wished to get the same job as men C. because she had got a good job D. but she wished to be treated the same as a man |
| 4. Anne Harper thought that _______. |
[ ] |
| A. women should live a better life than men B. women should be really liberated C. women should be given better jobs than men D. women should live a more wonderful life than men |
| 5. Which of the following is not true according to the passage? |
[ ] |
| A. There are more men scientists, engineers than women ones. B. Women are second-class people, so they shouldn't live a better life. C. Women do the same jobs as men, but get paid less than men. D. There are some best jobs that women have few chances to take. |