水泥混凝土强度按数理统计方法进行质量评定可分为已知标准差法和未知标准差法两类。已知标

题型:判断题

问题:

水泥混凝土强度按数理统计方法进行质量评定可分为已知标准差法和未知标准差法两类。已知标准差法适用于混凝土批量较小,施工周期较短的混凝土;未知标准差法适用于混凝土批量较大,在较长时间内混凝土的生产条件保持一致,且同一品种混凝土的强度性能保持稳定的混凝土。( )

考点:公路工程试验检测员考试材料材料
题型:判断题

《矿山生态环境保护与污染防治技术政策》规定,到2010年,新(扩、改)建有色金属系统选矿的水重复利用率应达到( )。

A.95%以上
B.90%以上
C.85%以上
D.75%以上

题型:判断题
Some people believe that greed and selfishness has become the basis of modern society, and we should return to the old traditions of family and community then we will have a better life. To what extent do you agree or disagree with the above opinion?
In this fast-paced world, many values are undergoing major changes. While people traditionally prioritize caring, sharing and generosity in life and work, modern people seem to be more self-absorbed and self-concerned.
Modern people act selfishly to survive the harsh competition of life. They say that it is a jungle out there. To survive, you have to fight with whatever means that come handy. Obviously greedy and selfishness go perfectly well with such ideas. In a company, employees do everything they can to get better pay and higher position, even at the cost of colleagues. We are in any way advocating any selfish conduct. It is just that people are pressured to act in a certain way due to outside influences.
In spite of common practice, it is hard to conclude that modern society is built on greed and selfishness, both of which are not newly invented vocabulary. In ancient times people also did greedy and selfish things though such behaviors were more condemned then. But we can not ignore the fact that people in the past lived a relatively more isolated life and faced less pressure compared with their modern counterparts.
Are we happier to share with others and be generous to them? There is no fixed answer either. Some people take great pleasure helping and giving to others while others feel happy doing the opposite. But I personally think that people should not be too selfish. Caring for others can actually encourage the development of a mutually beneficial relationship.
In conclusion, modern people appear to be more self-centered than those in the past due to strong outside pressure. However, we should encourage people to know the importance of being caring and generous and to build a mutually beneficial relationship with others.
Are Modern People Becoming More Selfish?
Main comparisons
Contexts
  __小题1:__ are changing
In the past people put caring, sharing  and generosity in the first ___小题2:____.
Nowadays, people seem to be more ____小题3:____about themselves.
___小题4:___are changing too.
People in the past appeared to be modest and self-effacing(谦让的).
People may strive to achieve their own __小题5:___ at the price of their coworkers.
The author’s  understanding
___小题6:____ for the changes in author’s eyes
Fierce __小题7:__ and great __小题8:___on modern people may be responsible for the changes.
The author’s ___小题9:____towards topic
A relationship which can __小题10:___ two sides should be established.
题型:判断题

光年是计量宇宙间天体之间距离的单位。()

题型:判断题

母亲:这学期冬冬的体重明显下降,我看这是因为他的学习负担太重了。父亲:冬冬体重下降和学习负担没有关系。医生说冬冬营养不良,我看这是冬冬体重下降的原因。
以下哪项,如果是真的,则最能对父亲的意见提出质疑

A.学习负担过重,会引起消化紊乱,妨碍对营养的正常吸收。
B.隔壁松松和冬冬一个班,但松松是个小胖墩,正在减肥。
C.由于学校的重视和努力,这学期冬冬和同学们的学习负担比上学期有所减轻。
D.现在学生的普遍问题是过于肥胖,而不是体重过轻。
E.冬冬所在的学校承认学生的负担偏重,并正在采取措施解决。

题型:判断题

高级工程师林某2011年取得如下收入:

2011年12月在甲公司担任技术总监,月工资9000元,企业为其支付补充养老保险1000元。林某认为当月应纳个税=(9000+1000-3500)×20%-555=745(元)。

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