现有稀硫酸和稀硝酸的混合溶液,已知其中稀硫酸浓度为4mol/L,稀硝酸的浓度为2

题型:选择题

问题:

现有稀硫酸和稀硝酸的混合溶液,已知其中稀硫酸浓度为4mol/L,稀硝酸的浓度为2mol/L.取10mL混合酸,向其中加入过量铁粉,反应结束后,在标准状况下可收集到气体体积为(假设HNO3只被还原为NO)(  )

A.0.224L

B.0.448L

C.0.672L

D.0.896L

考点:化学反应方程式
题型:选择题

级别选取

题型:选择题

马克思主义伦理思想的哲学基础是()

A、唯物史观

B、德国古典哲学

C、英国功利主义

D、18世纪法国唯物主义

题型:选择题

工频耐压试验采用高压侧直接测量试验电压时,测量设备包括()等。

A.电容(电阻)分压器

B.静电电压表

C.电压互感器

D.万用表

题型:选择题

Among various programmes, TV talk shows have covered every inch of space on daytime television. And anyone who watches them regularly knows that each one is different in style. But no two shows are more opposite in content, while at the same time standing out above the rest, than the Jerry Springer and the Oprah Winfrey shows.

Jerry Springer could easily be considered the king of" rubbish talk". The contents on his show are as surprising as can be. For example, the show takes the ever-common talk show titles of love, sex, cheating, and hate, to a different level. Clearly, the Jerry Springer show is about the dark side of society, yet people are willing to eat up the troubles of other people’s lives.

Like Jerry Springer, Oprah Winfrey takes TV talk show to its top. But Oprah goes in the opposite direction. The show is mainly about the improvement of society and different quality of life. Contents are from teaching your children lessons, managing your work week, to getting to know your neighbors.

Compared to Oprah, the Jerry Springer show looks like poisonous waste being poured into society. Jerry ends every show with a" final word". He makes a small speech about the entire idea of the show. Hopefully, this is the part where most people will learn something very valuable.

Clean as it is, the Oprah show is not for everyone. The show’s main viewers are middleclass Americans. Most of these people have the time, money, and ability to deal with life’s tough problems. Jerry Springer, on the other hand, has more of a connection with the young adults of society. These are 18 to 21 year olds whose main troubles in life include love, relationship, sex, money and drug. They are the ones who see some value and lessons to be learned through the show’s exploitation.

Though the social problems Jerry Springer talks about appear unpleasant, people who watch the shows()

A. remain interested in them

B. are ready to face up to them

C. remain cold to them

D. are willing to get away from them

题型:选择题

最不利环路

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