迟缓率对机组的运行有什么影响？

根据煤泥中细粒（-0.15mm）含量可大致确定入浮浓度，当细粒含量为30%～50%时，入浮浓度为（）。

A.≥200g/L

B.200～150

C.150～120

D.＜120

关于人格的说法，正确的是()。

A．一个人所受的教育对他的人格没有什么影响

B．人格是不稳定的，随时都会改变

C．人格在很大程度上受遗传影响

D．精神分析从个人意识经验发展和成长潜能整合的角度理解人格

Anna lived on the side of a valley (山谷). One winter, there was a very big flood, and a lot of houses down below Anna’s house were washed away. Anna’s house was high enough to escape the flood, so when the water had disappeared and the other houses were standing there with no roofs and walls and all covered with mud, her house was still quite all right. That year Anna’s was very lucky.

Her house was quite small and there were only two small bedrooms, her husband was dead when the children were very young, and she had four children, but Anna took in one of the families that had lost everything in the flood and she shared her home with them until it was possible for them to rebuild their house.

Anna’s friends were very puzzled (困惑) when they saw Anna do this. They could not understand why Anna wanted to give herself so much more work and trouble when she had already quite a lot of children to support. Life would be even harder when another family joined them.

"Well," Anna explained to her friends, "at the end of the First World War, a woman in the town where I then lived in Germany found herself very poor, because her husband had been killed in the war and she had a lot of children, as I have now. "

"The day before Christmas, this woman said to her children, ’We won’t have much for Christmas this year, so I am going to get only one gift for all of us and I am sure we will all be glad to have it. Now I’ll go and get it.’ She came back with a little girl who was even poorer than they, and who had no parents. ’Here is our gift,’ she said to her children. "

"The children were very excited and happy to get such a gift. They welcomed the little girl, and she grew up as their sister, I was just that Christmas gift. \

Who was once given as a Christmas gift to a poor family（）

某广告公司的宣传产品有宣传册、文章、传单等多种形式，宣传产品的出版方式包括纸质方式、CD、DVD、在线发布等。现要求为该广告公司设计一个管理这些宣传产品的应用，采用（1）设计模式较为合适，该模式（2）。

空白（2）处应选择（）

A.将一系列复杂的类包装成一个简单的封闭接口

B.将抽象部分与它的实现部分分离，使它们都可以独立地变化

C.可在不影响其他对象的情况下，以动态、透明的方式给单个对象添加职责

D.将一个接口转换为客户希望的另一个接口

在液体和固体的接触处有一厚度等于分子引力作用半径的一薄层液体，称为（）。

A、水层

B、液体层

C、附着层

D、固态