无头轧制采用动态变规格技术,一组带钢厚度可分步减薄,一组带钢中有不同厚度规格。

题型:判断题

问题:

无头轧制采用动态变规格技术,一组带钢厚度可分步减薄,一组带钢中有不同厚度规格。

考点:炼钢工炼钢工题库
题型:判断题

阅读理解。

     As a world food, potatoes are the second in human consumption (消耗量) only to rice. And thin,

salted and cooked potato chips are Americans' favourite snack food.    

     French fries were popular in France in the 1700s. And the recipe was brought to America by

Thomas Jefferson. In the summer of 1853 , American Indian George Crum had a job as a cook at a

beautiful place in Saratoga Springs, New York. His job was to make French-fried potatoes for the

guests.    

     Once, a guest found Crum's French fries too thick for him and asked Crum to do it again. Crum cut

it thinner,but the man still wasn't satisfied. Crum  was very angry and decided to teach the guest a lesson.

And then he put too much salt on it.  

     To Crum's surprise, the guest liked the paper-thin potatoes very much, and other diner asked Crum's

potato chips, too. Soon they were sold, first locally, then all over the New England area.  

     For many years after their creation, potato chips were mainly a dinner dish. In the 1920s, Herman

Lay had potato chips in the South and his potato chips became the first successfully marketed national

brand.    

      Today, Americans eat more potato chips than any other people in the world.

1. Which is the best title of the passage?    

A. The invention of potato chips.    

B. The history of potato chips.    

C. Americans like potato chips.    

D. The popularity of potato chips.

2. _______ brought potato chips to America.

A. Thomas Jefferson        

B. George Crum

C. Herman Lay              

D. None of the above

3. Why did the guest ask Crum to cook the potato chips again?    

A. Because they were too expensive.

B. Because they were too small.    

C. Because they were too thick.        

D. Because they were too salty.

4. For many years, potato chips were eaten _______.

A. at breakfast  

B. at lunch  

C. at dinner 

D. at any time

5. _______ eat the most potato chips in the world.

A. Frenchmen  

B. Americans  

C. Italians  

D. Australians

题型:判断题
两矩形线圈分别在匀强磁场中绕垂直于磁场的轴匀速转动,线圈中产生的感应电动势e随时间t的变化关系分别如图中甲、乙所示,则(   )

A.两交变电流的频率之比f:f=1:2

B.两交变电流的电动势有效值之比 E:E=3:1

C.t=1s时,两线框均处于中性面位置

D.同一电容器对交变电流甲的阻碍较大

题型:判断题

(106~108题共用题干)
女性,20岁。发作性头痛、心悸1年,体位改变时常有症状发作,测血压200/ 130mmHg,今日就诊时血压正常,无高血压家族史。化验空腹血糖6.7mmol/L,血电解质正常。

该患者最可能的诊断是

A.原发性醛固酮增多症

B.嗜铬细胞瘤

C.原发性高血压

D.肾性高血压

题型:判断题

下列各项中,不可以应用“3S”技术的是(  )

A.人口出生率、死亡率的统计

B.珠穆朗玛峰高程的精确测量

C.“神舟七号”载人航天器的发射

D.人口密度与商业网点布局的相关分析

题型:判断题

电离辐射最可能引起的肿瘤是()。

A.肝癌

B.胃癌

C.肾癌

D.宫颈癌

E.甲状腺癌

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