某学生在10℃时取100g水配制氯化钾的饱和溶液,又取50g水加入35.4g硝酸

题型:问答题

问题:

某学生在10℃时取100g水配制氯化钾的饱和溶液,又取50g水加入35.4g硝酸钠配成溶液,然后将两种溶液混合,发现有晶体析出.试通过计算指出析出晶体是什么物质.

(已知在10℃时,氯化钾的溶解度为30g,硝酸钠的溶解度为80g,硝酸钾的溶解度为20.9g,氯化钠的溶解度为35.8g.)

考点:结晶固体溶解度
题型:问答题

下列哪项不是肠内营养的适应证()

A.大面积烧伤

B.双下肢多发骨折

C.消化道瘘

D.复杂大手术后

E.脑外伤引起昏迷的病人

题型:问答题

在2011年的全国两会上,吴邦国委员长宣布,以宪法为统帅的中国特色社会主义法律体系已经建成,具有重大意义。我国的法律体系体现( )

①人民民主专政的国家性质 ②公民的权利与义务相统一

③政府权威的树立 ④党的领导、人民当家作主和依法行政有机统一

A.②③

B.①②

C.①③

D.③④

题型:问答题

BERLIN — With the crisis in Japan raising fears about nuclear power, Germany and Switzerland said on Monday that they would reassess the safety of their own reactors.

Doris Leuthard, the Swiss energy minister, said Switzerland would put off plans to build nuclear plants. She said no new ones would be permitted until experts had reviewed safety standards.

Germany will put off “the recently decided extension of the running time of German nuclear plants,” Chancellor Angela Merkel told reporters. “This moratorium(延缓)will run for three months and it will allow for a thorough examination of the safety standards of the county’s 17 nuclear power plants.

The European Union called for a meeting on Tuesday of nuclear safety authorities to assess Europe’s preparedness.

Germany’s foreign minister, Guido Westerwelle, called for a new risk analysis of the country’s nuclear plants, particularly regarding their cooling systems. He is the leader of the Free Democratic Party, which strongly supports nuclear power.

A previous government, led by the Social Democrats, passed a law in 2001 to close all the country’s nuclear plants by 2021. But Mrs. Merkel’s government changed that decision last year to extend the lives of the plants by an average of 12 years.

In Switzerland, Doris Leuthard said she had already asked to analyze the exact cause of the problems in Japan and draw up new or tougher safety standards “particularly in terms of seismic(地震的) safety and cooling.”

In Russia, the Prime Minister said his government would “draw conclusions from what’s going on in Japan.”

小题1:Where can you most likely read this passage?

A.In a newspaper.

B.In a magazine.

C.In a science report.

D.In a diary.小题2:How will Germany react to Japan’s nuclear crisis?

A.Germany will close all the country’s nuclear plants.

B.Germany will hold a meeting of nuclear safety authorities.

C.Germany will change the decision made last year.

D.Germany will delay the extension of nuclear plants running time.小题3:The author mentions all the following EXCEPT ______.

A.The moratorium in Germany will give time to examine the nuclear plants safety standards.

B.Switzerland will not build new nuclear plants unless they meet the experts’ safety standards.

C.The Social Democrats in Germany shares the same view with the Free Democratic Party.

D.Russia will try to learn something from the nuclear power crisis in Japan.小题4:What is the best title of the passage?

A.Watch Out for the Danger of Nuclear Power

B.Europe Is against Building Nuclear Plants

C.Nuclear Plants in Europe Are Delayed

D.Opinions on Nuclear Power Are Opposite.

题型:问答题

为鉴别排卵型或无排卵型功血,下述辅助检查无意义的是()

A.基础体温测定

B.周期性内分泌测定

C.月经前半周期做诊断性刮宫

D.周期性 * * 脱落细胞涂片检查

E.经前做宫颈黏液结晶检查

题型:问答题

驾驶员为提高雷达测距精度应注意哪些事项?

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