渐开线上各点压力角不同,离基圆越远,压力角越大。

题型:判断题

问题:

渐开线上各点压力角不同,离基圆越远,压力角越大。

考点:矿井泵工矿井泵工题库
题型:判断题

“My dear lady,” says Holmes. “You’re shaking. Are you cold? Do you want a cup of hot tea?”

“I’m not cold,” the woman replies, “I fear for my life!”

“We are here to help you. Don’t worry about anything. I don’t know you. But I know many things about you. For example, I know how you travel. You came to London by train. You also ride to the train station on a horse-drawn wagon(马车).”

“Why, yes. You’re right. But how do you know these things?”

“I see a return ticket in your glove. I see fresh mud(泥土) on the left arm of your dress. Now tell us your problem.”

“My name is Helen Stoner,” she states, “My mother and father are dead. I am living with my stepfather(继父), Dr Grimesby Roylott. He comes from a rich family. But they are no longer rich. They have nothing except a small piece of land and a big old house. We are living in the house. Dr Roylott is using my mother’s money for expenses(开支). Part of it was for my sister and me. It was for our marriages.”

Holmes is sitting in his chair. His eyes are closed. He is listening carefully to Helen’s story. He hears every detail.

Helen continues. “My stepfather has no friends. He fights with everyone. He is strong and gets angry quickly. Everyone is afraid of him.”

“He has no friends at all?” asks Holmes.

“No. He talks to no one except the gypsies(吉普赛人). They are poor people who travel from place to place. A band of gypsies is staying on our land right now.”

“Are you and your sister afraid of the gypsies?”

“My dear Mr Holmes. You are making me so sad. My sister is dead. That is why I am standing here in this room.”

小题1:Paragraph 6 beginning with “My name is …” is mostly about ________.

A.Helen’s dead sister

B.Helen’s trip to London

C.the house Helen lives in

D.Helen’s stepfather and the family小题2:What is Holmes doing while Helen is telling her story?

A.Walking slowly.

B.Listening carefully.

C.Standing sadly.

D.Writing quickly.小题3:Which of the following can best describe the gypsies according to the passage?

A.They are very rich.

B.They are afraid of other people.

C.They live on a horse-drawn wagon.

D.They move from one place to another.

题型:判断题

在操作过程中,控制气体流速,可有效降低噪声,对于地面管线宜控制在30~60m/s内。

题型:判断题

病理式呼吸模式

题型:判断题

患者女,35岁,1天钱进食油腻的食物后出现上腹剧烈疼痛,查体;Murphy征(+),其压缩点位()。

A、膈下

B、右肋下

C、右下腹

D、左肋下

E、脐周

题型:判断题

《计算机信息系统安全保护条例》规定,任何组织或者个人违反条例的规定,给国家.集体或者他人财产造成损失的,应当依法承担()。

A.刑事责任

B.民事责任

C.违约责任

D.其他责任

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