数据库的设计需要综合企业各个部门的存档数据和数据需要，在数据流程图和（）的基础上，设

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       Jerry went to a barber's shop and had his hair cut, but when he came out, he was not happy with

the result. When his friend Jack saw him, he said in surprise, "What has happened to your hair, Jerry? "

       Jerry said, "I tried a new barber's shop today, because I wasn't quite pleased with my old one.

But this one seems even worse. "

       Jack agreed. "Yes. I think you are right. Jerry. Now I'll tell you what to do when you go into a

barber's shop next time: look at all the barbers' hair, find out whose hair looks the worst, and then go

straight to him. "  

       "Why shall I go to him? But that would be foolish!"

       "Oh. no. it wouldn't." answered Jack. "Who cut that man's hair? Just think it over. He couldn't cut

it himself, could he? Another of the barbers cut it. So you know he can't be the worst barber. "

1. When Jerry went out of the barber's shop. He was not happy because              .

A. nobody had cut his hair

B. the barber hadn't cut his hair well

C. he was satisfied with his old barber

D. the barber had cut his hair carefully

2. Jerry said that he had tried a new barber's shop that day.  He meant              

A. the barber's shop was a new one

B. that was the only barber's shop in his town

C. Jerry often were to this barber's shop

D. Jerry had not been to that barber's shop before

3. After Jerry had his hair cut , he thought               .

A. the new barber's shop was the best one

B. the old barber's shop wasn't so good as the new one

C. the new barber's shop was worse than tile old one

D. the old barber's shop was the worst one

4. Jack told Jerry to find out which barber's hair looked the worst and then go straight to him

because             

A. he was certainly the best barber        

B. he was free all the time

C. he was the worst barber              

D. he wasn't the worst barber

5. From the story we know that             .

A. it's foolish to have one's hair cut at a barber's shop

B. barbers cut each other's hair

C. barbers never have their hair cut

D. a barber always cuts his hair by himself

---What should I do, doctor?  ---_______healthy, you should take more exercise.

A．Keep

B．To keep

C．Keeping

D．To keep away from

下列属于高压部件的是()

A．X线管

B．高压硅整流器

C．灯丝加热变压器

D．高压电缆

E．高压交换闸

钳工的特点有哪些？

诉讼时效期间从( )计算。

A．权利受害者起诉时
B．权利被侵害时起
C．法律行为生效时起
D．知道或者应当知道权利被侵害时起