混床单元控制指标有()A、出水电导率 B、污染物指数 C、余氯 D、二氧化硅

题型:多项选择题

问题:

混床单元控制指标有()

A、出水电导率

B、污染物指数

C、余氯

D、二氧化硅

考点:环境科学技术及资源科学技术化学水处理技术化学水处理技术题库
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设A是三阶矩阵,λ1,λ2,λ3是A的三个不同的特征值,对应的特征向量分别是ξ1,ξ2,ξ3,令β=ξ123

证明向量组β,Aβ,A2β线性无关.

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恩格斯说,马克思主义“ 和任何新的学说一样,它必须从已有的思想材料出发,虽然它的根源深藏在物质的经济的事实中”。对材料中“思想材料”解读不正确的是 

A.英法的空想社会主义

B.德国古典哲学

C.英国的古典政治经济学

D.科学社会主义理论

题型:多项选择题

阅读理解

     Lisa, a 25year old from Beijing, recently places a number of very unpleasant statements on the

Internet regarding the elderly.They include things like "don't  rely on others", "don't expect others to

help", "don't be talkative", and "dont't be so stubborn". The underlying message was that elderly

people should not take advantage of their old age to demand special favours from others, particularly

from the young.This of course flies_in_the_face_of the Chinese tradition of respecting the elderly.But,

in my opinion, Lisa's "requests" might not be totally unreasonable.Old people do sometimes behave

like they're "stubborn"and "talkative". Still, the young woman is rudely insensitive to why the elderly

behave that way.As people get old, they become increasingly weakened physically.So it's natural for

them to ask for more help from others.As their memories decline, they tend to be talkative because

they easily forget what has just been said.The American psychologists D. R.Atkinson and G. Hackett

said that the brain is characterized by flexibility.It has the ability (most pronounced up to the age of 12)

to change itself as a result of experience.But, as the brain ages, this flexibility decreases.As a result, the

elderly are often inflexible in their ways.

     Therefore, old people need real care and deserve to be taken care of.Many have devoted most of

their lives to the wellbeing of the family or social.Their aging is no reason for showing prejudice (偏见)to

them.  According to Chinese tradition, older people are to be respected.As are Westerners.

     I live in the US for eight years, and in Hong Kong for 13.Never have I seen or heard anyone who

would openly tell old people "to behave themselves".

    We may encourage old people to be more selfreliant.But rudely demanding that they do so is ageism.

That's where the difference lies.

1. What does Lisa think of the elderly?

A. The elderly hate to rely on the others.

B. The elderly should take advantage of their old age.

C. They are not talkative but stubborn.

D. The elderly always demand special favors from the young.

2. The underlined part in the first paragraph can be replaced by"________".

A. expresses the apparent meaning of

B. shows disagreement with

C. deals with the surface meaning of

D. draws a conclusion from

3. What's the writer's attitude towards this problem?

A. The young woman is too sensitive to why the elderly behave that way.

B. The elderly naturally ask for more help from others, because their brain is characterized by flexibility.

C. The elderly are often inflexible in their ways, which makes the young suffer.

D. The elderly deserve to be taken care of and we shouldn't show our prejudice because of their aging.

4. The last three paragraphs really want to show that________.

A. we should respect the elderly

B. the people in the US or Hong Kong respect the older people

C. old people should be encouraged to be more selfreliant

D. different ideas about the elderly are allowed to exist

题型:多项选择题

确定电缆长期允许载流量时应注意哪几个主要因素?

题型:多项选择题

病历摘要:患者男性,50岁,咳嗽咯痰伴发热1周。患者一周前受凉后出现咳嗽,咯痰,色白,体温波动在37.3~38℃,微恶寒,咽痛,无明显气促,无胸痛胸闷,行胸透检查未见异常,予泰利必妥、安溴索等治疗后无明显好转。现见症:咳嗽,咯痰色黄,质粘,咽痛,无明显恶寒,稍有发热,纳少,口干。舌红,苔黄稍腻,脉滑数。

该病人护理应注意哪些方面?()

A.注意保暖

B.饮食清淡,禁饮酒

C.多饮水

D.多食寒凉之品,可用雪梨煲水,饮汤食梨

E.勤于锻炼

F.保持大便畅通

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