用一夹一顶或两顶尖装夹轴类零件,如果后顶尖轴线与主轴轴线不重合,工件会产生()误差。

题型:单项选择题

问题:

用一夹一顶或两顶尖装夹轴类零件,如果后顶尖轴线与主轴轴线不重合,工件会产生()误差。

A、圆度

B、跳动

C、圆柱度

D、同轴度

考点:车工考试高级车工高级车工题库
题型:单项选择题
不等式|3x-4|<2的整数解的个数是(       )

A.0
B.1
C.2
D.大于2
题型:单项选择题

特种设备生产单位对其生产的特种设备的()负责。

A.质量性能

B.可靠性能

C.安全性能

D.技术性能

题型:单项选择题

Once upon a time there was a monster(怪兽). He was very ugly and had no friends. No one wanted to talk to him. Even other monsters thought he was ugly.

He lived alone and was very unhappy because he was so lonely.

“I wish I had a friend.” He said to himself every day, “One friend would be enough. Someone to talk to.”

He wrote a letter to a magazine. The magazine gave people advice.

“Dear Editor,” he wrote, “I am a ugly monster. How can I find a friend?”

“Dear monster,” the Editor replied, “Advertise for a friend in this magazine.” The monster wrote an advertisement.

“Monster wants a friend, male or female. I have two heads, four arms, six legs and three tails. I have one blue eye, one green eye and one brown eye. Smoke comes out of my nose. But I am really a kind monster and will be a good friend to someone. If you would like to meet me, please stand outside Blake’s Store at 6 p.m. on Friday, May 7th. Write to Mr. A, Box 45, everybody’s Magazine.”

A few days later he went to the magazine.

“Do you have any letters for Box 45?” he asked.

The clerk looked in Box 45.

“Yes, there is one.” She said, and gave it to him.

The monster opened the letter, and read, “Dear Monster, I think a person’s character is more important than his appearance. I will wait outside Blake’s Store on Friday. Please carry a flower so that I will recognize you. Yours sincerely, Miss Alice Thwaite.”

小题1:Why was the monster unhappy?

A.He had no friends.

B.He was ugly.

C.He had two heads.

D.He had three tails.小题2:What did the monster advertise for?

A.A magazine.

B.A friend.

C.An editor.

D.A male or female monster.小题3:How did the monster describe him in the advertisement?

A.Ugly

B.Lonely

C.Kind

D.Good-looking小题4:What was strange about Miss Thwaite’s letter?

A.She was not interested in people’s appearance.

B.She wanted to meet the monster.

C.She needed a flower to recognize him.

D.It was the only reply.

题型:单项选择题

下列属于抗肿瘤药物的是

A.左旋咪唑

B.吡喹酮

C.甲硝唑

D.阿苯达唑

E.甲氨蝶呤

题型:单项选择题

将涂布了涂料的物件加热干燥,按温度(指涂层温度或被涂物温度)可分()(100℃以下)、中温(100~150℃)、高温(150℃以上)三种形式。

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