问题 问答题 简答题

工序简化的极限是什么?

答案

参考答案:

简化的极限是.每道工序只包含一个工艺。这样就可以大大减少机床的调整次数,缩短辅助时间,在大批生产中可显著提高生产率。

阅读理解

Rio de Janeiro(里约热内卢) will host the 2016 Olympic Games. The International Olympic Committee announced(宣布) it on October 2,2009.Rio de Janeiro beat Chicago, Tokyo and Madrid to win the bid(中标).It will be the first South American city to host the Olympics. The city will also host the 2014 World Cup. Rio de Janeiro is the second largest city in Brazil.

*Population: 6 million

*Language: Portuguese

* Rio de Janeiro has the world’s largest urban forest(城市森林),Which is made up of many kinds of green plants.

*Every year Rio de Janeiro holds a carnival(狂欢节). It is like a  big party. People dress up, dance samba and have fun. It usually lasts for a week. More than two million tourists come to Rio de- Janeiro every year. About half a million people visit the city for the carnival each year.

小题1:Rio de Janeiro beat the other      cities to win the bid For the 2016 Olympic Games.

A.five

B.four

C.three

D.two小题2:If you have a visit to Rio de Janeiro, you can see a large Number of      in the city.

A.animals

B.trees

C.lakes

D.players小题3:Which of the following is TRUE?

A.We can have fun in the carnival for nine days.

B.The carnival in Rio de Janeiro is held every four years.

C.Both people in Rio de Janeiro and tourists can take party in the carnival.

D.About one million people visit Rio de Janeiro for the carnival each year.小题4:We can see the passage in a     .

A.storybook

B.tour book

C.geography book

D.science book

单项选择题