混凝土的耐久性指标应根据()确定。 A.结构设计使用年限 B.水泥用量 C.所处环境

题型:多项选择题

问题:

混凝土的耐久性指标应根据()确定。

A.结构设计使用年限

B.水泥用量

C.所处环境类别

D.作用等级

E.拌合设备

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题型:多项选择题

阅读理解。

       

     When we talk about stars, especially women stars, it seems that they are always young, pretty and own

  attractive body shapes. But recently a  Britain's Got Talent (英国达人) star Susan Boyle has changed

 our views completely.

     Simon Cowell, one of the organizers of the talent show spoke of his surprise over Ms Boyle's voice.

 "This lady came up, and I'm thinking, 'This will take five seconds and I can go to have a cup of tea.' That

 changed when she began to sing I Dreamed a Dream from Les Miserables. She knew we were going to

 have that reaction (反应) and just to see that look of satisfaction on her face midway through . it was one

  of my favorite moments," Cowell said.

     The performance was posted online and before long, the 47-year-old Scottish woman has been famous

  all over the world.

     Speaking from her home in Scotland, Ms Boyle said that she hadn't thought of changing her

 appearance. She said that her friend helped her with make-up. "I mean, it's meaningless." She added.

     Ms. Boyle also spoke of the reason she first began to explore her musical talents. " I was kind of slow

 at school, so getting something like singing was a good way of hiding behind that and therefore it built my

 confidence.''

1. Susan Boyle had a look of satisfaction on her face when she was singing because _____.        

    A. she was confident of her singing

    B. she was satisfied with the organizers

    C. she was pretty and in good shape

    D. she sang the song I Dreamed a Dream from Lea Miserables

2. What does the underlined word "views" mean?

    A. 见解

    B. 预告

    C. 复习

    D. 景色

3. According to the passage, which is NOT true?

    A. It was the musical talents that built Susan's confidence.

    B. Susan Boyle was not good at her lessons when at school.

    C. Susan Boyle became famous because of her appearance.

   D. Simon Cowell didn't think Susan Boyle a good singer at the time sight.

4. What can we learn from Susan Boyle's success?

    A. It's never too old to learn.  

    B. It's easier to succeed at the age of 47.

   C. If you have a dream, keep trying to make it come true!

   D. If you are not able to study well, to be a singer instead.

题型:多项选择题

a3=a+a+a______.(判断对错)

题型:多项选择题
长为L粗细均匀的圆柱体,其轴线与直角坐标系x轴重合,底面过原点且与yOz平面平行,如图所示,圆柱体在yOz平面内质量均匀分布,在x方向密度均匀增加,则圆柱体重心位置坐标(xc,yc,zc)为(  )

A.yc=0,,zc=0,xc

B.yc=0,,zc=0,xc=

C.yc=0,,zc=0,xc

D.无法判断

题型:多项选择题

进行报价解释时必须遵循的原则是()

A.不问不答 

B.有问必答 

C.避实就虚 

D.能言不书

题型:多项选择题

在证券经纪业务中,当情况发生变化而不得不变更委托指令时,经纪商可先行变更客户委托指令,事后向客户解释说明。( )

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