阀门可以用来调节管路中物料的流量。

题型:判断题

问题:

阀门可以用来调节管路中物料的流量。

考点:循环水操作工循环水操作工题库
题型:判断题

引起副溶血性弧菌食物中毒的好发食品是

A.碘化消毒
B.紫外线消毒
C.常量氯化消毒
D.超量氯化消毒
E.加热消毒

题型:判断题

2013年3月17日上午,具有64年历史的中华人民共和国铁道部摘牌,中国铁路总公司正式亮相。有关经济学家为铁道部改制成中国铁道总公司叫好,称这是“鼓励民间资本进入铁路、金融、能源、电信等领域,鼓励民间资本参与国有企业重组”的重要举措。这

①说明非公有制经济与公有制经济的作用和地位相同

②有利于充分利用民间资本,促进我国经济又好又快发展

③会削弱公有制的主体地位和国有经济的主导作用,       

④有利于进一步引导、鼓励、支持非公有制经济的发展

A.①②

B.①③

C.③④

D.②④

题型:判断题

Many people believe that teaching children music makes them smarter, better able to learn new things. But the organizers of a new study say there's no scientific evidence that early musical training affects the intelligence of young people.

An estimated 80 percent of American adults think music lessons improve children's abilily to learn or their performance in school. They say that the satisfaction for learning to play a new song helps a child express creativity.

Researchers at Harvard University, however, have found that there's one thing musi­cal training does not do. They say it does not make children more intelligent. Samuel Mehr is a graduate student at Harvard's School of Education. He said it is wrong to think that learning to play a musical instrument improves a child's intellectual development. He says the evidence comes from studies that measured the mental ability of two groups of 4-year-olds and their parents. One group attended music class, the other went to a class that places importance on the visual arts—arts that can be seen.

"The evidence there is 'no'. We found no evidence for any advantage on any of these tests for the kids participating in these music clases," said Mehr.Samuel Mehr says researchers have carried out many studies in an effort to learn whether musical training can make children smarter. He says the results have been mixed. He says only one study seems to show a small percentage increase in IQ, intellectual scores among students after one year of music lessons. He does not believe that IQ is a good measure of child's intelligence. He says researchers in his study compared how well children in the musical training group did on mental processing tasks or projects, then the results were compared to those of children who did not take lessons. There was no evidence that the musical training group did much better on the mental tasks than the other group.

The researchers comfirmed the results with a larger group of children and their par­ents.Mr Mehr says music lessons may not offer children a fast easy way to gain entry to the best schools later of their life. But he says the training is still important for cultural reasons. In his words, "We teach music because music is important for us."

小题1:According to the new study, musical training______.

A.makes children smarter

B.helps a child express creativity

C.does not make children more intelligent

D.improve children's ability to learn in school小题2:Samuel Mehr may agree that______.

A.the children who attended music class are smarter than those who attended arts class

B.IQ is a good measure of a child's intelligence

C.we needn't to teach children music

D.music training is still important for cultural reasons小题3:In order to confirm his view, Samuel Mehr______.

A.conducted more than one research

B.interviewed many American adults

C.taught two groups of 4-yetr-olds music and arts

D.offered children a fast way to be admitted to the best schools小题4:The artical may be taken from a report about _____.

A.health

B.education

C.culture

D.economy

题型:判断题

在地壳内,深度每增加1km,压强约增加25250~30300kPa,这对固体物质的平衡会发生较大的影响。如:CaAl2Si2O8+Mg2SiO4CaMg2Al2Si3O12

(钙长石)  (镁橄榄石)   (钙镁)石榴子石

密度(g/cm3)     2.70        3.22            3.50

则在地壳区域高压条件下,有利于             (   )

A.钙长石生成

B.镁橄榄石生成

C.钙长石和镁橄榄石共存

D.(钙镁)石榴子石生成

题型:判断题

在病因研究的轮状模型中,强调宿主与下列哪种因素的关系()

A.生物因素

B.环境因素

C.物理因素

D.精神因素

E.化学因素

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