问题 问答题

简述水冷泵的检修质量标准。

答案

参考答案:

水轮无腐蚀、裂纹、磨损等缺陷,水轮装在轴上应牢固、不松动,晃度不大于0.10mm,瓢偏不大于0.01mm。

泵轴光滑无损伤、沟痕、裂纹,弯曲度不大于0.04mm,轴颈椭圆度及锥度均不大于0.02mm。

密封环安装牢固,无松动,密封环径向间隙为0.30—0.50mm,轴向间隙1—1.5mm。

轴套无磨损,端面光滑无沟痕,装在轴上晃度不大于0.04mm。机械密封动环和静环表面应光滑,不得有划伤,其弹簧紧力适合,不得太松或太紧,各密封垫应完好。

轴承压盖间隙为0.20—0.30mm范围内。对轮找中心,两对轮轴向间隙3—6mm,圆周误差0.10mm,平面0.05mm。

组装时轴套与叶轮之间的聚四氟乙烯垫应完好。水力部分的零部件均为奥体不锈钢,更换时必须按原材料加工。

完形填空

The Chinese New Year is a great holiday to choose to celebrate Chinese culture with your child. Here are few fun ways to bring a bit of fun and  1  into your home through the festivities of the Chinese New Year.

1.Add a lucky red door. Red is a traditional color of   2 . It's an important part of the Chinese New Year to   3 on doing what one can to bring about good luck for the New Year. If you don't want to  4  the door red, how about wrapping it up like a present with red wrapping paper. If changing your front door's color is not workable, how about the door to your child's bedroom?

2.Eat. A huge part of most cultures is that of food and the Chinese New Year is not   5 , it's eating jiaozi at midnight on New Year's Eve, or longevity noodles on day seven of the festivities to    6 long life. The Chinese New Year celebrations mean many fancy meals that your child will   7 .

3.Create a lantern. Sara Naumann, the Guide to China Travel, shares a bit about the legend of the Lantern Festival or Yuanxiao, which occurs on the   8 day of the Chinese New Year festivities. It's a   9 that includes an emperor, a young woman who misses her family, and tricking the God of Fire. Your kids should love this story. After   10 it with them, or while reading the story, enjoy making your own paper lantern to display.

4.Give lucky money. The Guide to Mandarin Language shares that another very popular   11 during the Chinese New Year is that of the gift of red envelopes with   12 in them. These gifts are given to children and usually follow a bit of superstition(迷信) in that the money needs to be given in even amounts and never contain   13 numbers, such as four. Therefore, four dollars is not a good gift. The envelopes are also decorated with lucky symbols and New Year   14 .

5.Give a small gift. The giving of simple gifts is also an appropriate way to   15 the Chinese New Year. What better gift than that of a children's book about the Chinese New Year or the Chinese Culture.

6.Make some noise. Just like in America, the Chinese use   16 in ringing in their New Year. In the Chinese culture it began as a way to   17  away any demons(鬼) that threaten to bring a profitable and lucky New Year, but today it's also about excitement and   18  . Consider setting off a few firecrackers of your own, if allowed in your area. If not, make a cute firework picture with a bit of glitter and glue. A pretend firecracker is another great craft that could also be considered a festive way to decorate your New Year table.

7.Sing Happy Birthday to your dog. The second day of the Chinese New Year is   19 the birthday of all dogs. Why not   20 your child to throw Fido a birthday celebration? Perhaps an extra ride in the car or new chew toy is in order? I know my dog would appreciate a few extra belly rubs too.

(    ) 1. A. tradition           B. culture             C. civilization       D. habit

(    ) 2. A. wealth              B. disaster             C. belief                      D. luck

(    ) 3. A. focus                      B. accuse              C. adapt                D. mind

(    ) 4. A. boil                 B. paint                C. wash                D. purchase

(    ) 5. A. same                B. similar             C. common           D. different

(    ) 6. A. come about       B. take about         C. bring about       D. get out

(    ) 7. A. bore                 B. destroy             C. enjoy                      D. absorb

(    ) 8. A. last                  B. first                 C. second              D. next

(    ) 9. A. play                 B. story                C. novel                      D. history

(    ) 10. A. sharing           B. listening           C. reading             D. making

(    ) 11. A. invention               B. story                C. race                 D. tradition

(    ) 12. A. food                      B. clothes             C. money              D. jewels

(    ) 13. A. unclear           B. unlucky            C. unfair               D. uncertain

(    ) 14. A. wishes            B. signs                C. presents            D. happiness

(    ) 15. A. spend             B. envy                C. buy                  D. celebrate

(    ) 16. A. firecrackers     B. songs                      C. dances              D. goods

(    ) 17. A. take                      B. scare                C. get                   D. burn

(    ) 18. A. fun                B. relax                C. sleep                D. travel

(    ) 19. A. fixed              B. named              C. considered               D. marked

(    ) 20. A. order              B. accompany       C. tease                D. allow

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