形成齿轮渐开线的圆是()。A、分度圆 B、齿顶圆 C、齿根圆 D、基圆

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问题:

形成齿轮渐开线的圆是()。

A、分度圆

B、齿顶圆

C、齿根圆

D、基圆

考点:矿井维修钳工矿井维修钳工(高级)矿井维修钳工(高级)题库
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根据短文内容及首字母提示,在空白处写出单词,使短文完整、通顺。

       One night Mr Lee was driving his wife home from work. She was a nurse in a hospital. It was

almost midnight and she was quite tired. She soon fell a  1   , Mr Lee looked at her and smiled.

      Mr Lee was a c  2   and experienced driver. He knew it was safer to drive slowly on a dark  night.     A  3   a while, he noticed a car following him. It was travelling very fast. Suddenly it overtook(超过)his

car.  .

      The driver of the car was in a h  4   .He did not see the approaching(临近)truck. To avoid hitting it,

he suddenly turned his car. The car skidded(滑)off the road and hit a big tree. The driver and the

passengers were injured(受伤).They were badly hurt by the b  5    glass of the car. Mr Lee quickly

s  6   his car and called the police. His wife got out of the car to help them. About twenty-five minutes l  7   ,a police car and an ambulance(救护车)a  8  .The injured were taken to hospital.

       The policemen wrote down details of the accident. Mr Lee and the truck driver told t  9   what they

could remember. The policemen t  10   them for their help. Mr Lee and Mrs Lee got into their car and

continued their journey.

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下列表达式中,结果为数值型的是

A.CTOD([04/06/03])-10

B.100+100=300

C.“505”-“50”

D.LEN(SPACE(3))+1

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产后甲状腺炎的表现中下述哪几种是可能存在的()

A.发热

B.甲状腺触痛

C.黏液性水肿

D.甲状腺肿大

E.牙痛

题型:单项选择题

迎风坡常形成地形槽,背风坡常形成地形脊。

题型:单项选择题

孟子是()

A.战国中期儒家学派的代表

B.庄子的论辩对手

C.主张行“王道”,施“仁政”

D.孔子的学生

E.齐国人

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