某企业在下料过程中需要从一块钢板上截出一些边长为X的正方形块料。已知X服从正态分布,

题型:单项选择题

问题:

某企业在下料过程中需要从一块钢板上截出一些边长为X的正方形块料。已知X服从正态分布,工程师们关注的关键质量特性是正方形块料的面积X2,他们想了解块料面积的分布,有关块料面积应服从的分布,下列说法正确的是:()

A.块料面积一定不再是正态分布

B.块料面积仍是正态分布

C.块料面积通常会是双峰分布

D.块料面积一定是指数分布

考点:管理学六西格码管理六西格码管理题库
题型:单项选择题

商业银行一般把()作为融资的最后选择。

A.同业拆借

B.向中央银行借款

C.债券回购

D.发行金融债券

题型:单项选择题

“I've changed my mind. I wanted to have a telescope, but now I want my daddy back." Lucien Lawrence’s letter to Father Christmas written after his schoolteacher father had been knifed to death outside his school gate, must have touched every heart. Lucien went on to say that without his father he couldn't see the stars in the sky. When those whom we love depart from us, we cannot see the stars for a while.

But Lucien, the stars are still there, and one day, when you are older and your tears have gone, you will see them again. And, in a strange way, I expect that you will find your father is there too, in your mind and in your heart. I find that my parents, long dead now, still figure in many of my dreams and that I think of them perhaps more than I ever did when they were alive. I still live to please them and I' m still surprised by their reactions. I remember that when I became a professor, I was so proud, or rather so pleased with myself, that I couldn't wait to cable my parents. The reply was a long time in coming, but when it did, all Mother said was “I hope this means that now you will have more time for the children!” I haven' t forgotten. The values of my parents still live on.

It makes me pause and think about how I will live on in the hearts and minds of my children and of those for whom I care. Would I have been as ready as Philip Lawrence have been to face the aggressors (挑衅者),and to lay down my life for those in my care? How many people would want me back for Christmas? It's a serious thought, one to give me pause.

I pray silently, sometimes, in the dead of night, that ancient cry of a poet “Deliver my soul from the sword (剑), and my darling from the power of the dog.” Yet I know the death comes to us all, and sometimes comes suddenly. We must therefore plan to live forever, but live as if we will die tomorrow. We live on, I'm sure, in the lives of those we loved, and therefore we ought to have a care for what they will remember and what they will treasure. If more parents knew this in their hearts to be true, there might be fewer knives on our streets today.

小题1:According to the whole text we can see that the first paragraph ________.

A.explains the importance of a telescope

B.shows the writer's pity on the kid

C.acts as an introduction to the discussion

D.makes a clear statement of the writer's views小题2:In the second paragraph the author mainly wants to explain to us ________.

A.how much he misses his parents now

B.why his parents often appear in his dream

C.when Lucien will get over all his sadness

D.how proud he was when he succeeded in life小题3:In the writer's opinion, the value of a person’s life is ________.

A.to leave behind a precious memory to the people related

B.to have a high sense of duty to the whole society

C.to care what others will remember and treasure

D.to share happiness and sadness with his family小题4:What feeling did the author’s mother express in her reply?

A.Proud.

B.Happy.

C.Disappointed.

D.Worried

题型:单项选择题

凉开剂中清热解毒之力最强的方剂是()

A.安宫牛黄丸

B.牛黄清心丸

C.紫雪丹

D.至宝丹

E.苏合香丸

题型:单项选择题

补阳还五汤中黄芪的配伍意义是()

A.补气固表

B.补气行血

C.补气生血

D.补气升阳

E.补气行水

题型:单项选择题

女性,62岁,诊断胃癌,血压160/100mmHg,中度 贫血,消瘦,术前准备不是必要的项目是

A.纠正贫血

B.改善营养状态

C.检测肝功能

D.血压降至正常

E.血生化检测

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