主成分分析能够把多个指标简化为少数几个综合指标,并能使这些综合指标尽可能地反映原来的

题型:单项选择题

问题:

主成分分析能够把多个指标简化为少数几个综合指标,并能使这些综合指标尽可能地反映原来的多个指标的信息,并保证这些综合指标彼此之间( )。

A.互不相关

B.高度相关

C.低度相关

D.中度相关

考点:统计师考试统计工作实务统计师中级统计工作实务真题2008年
题型:单项选择题

“There’s going to be one less boy in the room!” The words rang in my ears as the criminal(罪犯) pointed his gun against my head. The floodgates opened and tears ran down my face. No one in the courtroom(法庭) moved. Everyone was held silent with fear. A few seconds passed and the criminal put down his gun, turning his back on me.

“Cut!” the director shouted with joy. One take! We had done the scene in just one take. Then all the people who acted in the film went off for lunch.

I got my food and joined them, and the criminal, who had moments before been so scary, took his seat beside me and told us many funny jokes. A table of adults surrounded me, but I was never uncomfortable talking with strangers. I worked with these people and they worked with me. We talked, we laughed, we got to know each other and sometimes we became friends. At the end of the day we all went our separate ways, but we had been drawn close by working together to make this play.

After the show was broadcast, my friends asked if I had been scared of the criminal. At first this sounded funny. He was, after all, a kind and intelligent man. Then I realized that they didn’t see that side of him. Television and films are about creating an alternate(交替的) life that appears real even if for a while. We had been successful in doing that. Even my friends, who knew the real me, were drawn in the make-believe world of our story.

Acting has helped me to feel comfortable in my own skin and in communicating with others. I feel relaxed during interviews and when leadership opportunities come. Change is not threatening(威胁) to me, and I am grateful for the chance to learn and to grow in knowledge and experience in my life.

小题1:

In the film, what was the manner of the author’s character when facing the criminal?

A.Brave and calm.

B.Anxious and terrified.

C.Shy and quiet.

D.Heroic and fearless.小题2:

We know from the passage that the author       .

A.is a kind person

B.has realized his dream to be an actor

C.has a gift for film acting

D.has no experience in film acting小题3:

When they had lunch, the author        .

A.was too afraid to sit beside the criminal

B.was unwilling to talk with the others

C.was laughing to tears by the criminal’s jokes

D.was comfortable communicating with others小题4:

Why could the author understand his friends’ questions?

A.He had a close relationship with his friends.

B.The actors performed so well that the audience accepted the story as true.

C.He thought it was normal for the audience to question the actors.

D.He thought they didn’t understand the process of film acting.小题5:

It can be inferred from the passage that       .

A.the author felt lucky to play in the film

B.it wasn’t the first time that the author had acted in films

C.the author’s friends encouraged him to act in films

D.the author had a successful career because of this film

题型:单项选择题

如果你家里的食用花生油不小心混入了大量的水,利用你所学的知识,最简便的分离方法是(   )

A.过滤

B.分液

C.蒸发

D.蒸馏

题型:单项选择题

动脉血气分析的正常值中,下列哪项是错误的()

A.pH7.35~7.45

B.BE5mmol/L

C.SaO297%

D.PaO295~100mmHg

E.PaCO235~45mmHg

题型:单项选择题

施工现场经常性安全检查,不包括()。

A.专职安全员每天的安全巡视

B.作业班组在班前、班中和班后的安全检查

C.施工员在组织施工的同时所进行的安检

D.专业性安全检查

题型:单项选择题

《人口与计划生育法》规定,计划生育技术服务机构和从事计划生育技术服务的医疗、保健机构应当开展如下工作,除了()

A.人口与计划生育基础知识宣传教育

B.对已婚妇女开展孕情检查

C.计划生育

D.生殖保健的咨询

E.非医学需要的胎儿性别鉴定

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