喷溅有哪些危害,产生喷溅的基本原因是什么,转炉炼钢喷溅有哪几种类型?

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问题:

喷溅有哪些危害,产生喷溅的基本原因是什么,转炉炼钢喷溅有哪几种类型?

考点:炼钢工炼钢工题库
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下列标点符号使用有错误的一项是(2 分)

A.1947年的《中华民国行政区域图》就已在南海标明了九段线。

B.兴化的乌巾荡、徐马荒、李中水上森林、大纵湖,姜堰的溱湖以及靖江江心洲等地,都是候鸟们的最佳栖息地。

C.燃气管道铺设,将穿兴泰路,届时会对兴泰路交通造成影响吗?

D.鼓楼街上好些商店门前的告示牌,全是“换季大减价”“大甩卖”“跳楼价”……云云,好像他们都在做赔本生意似的。

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绝对压力为1个大气压的纯气体,在-35℃时成为液态,其由液相变为气相体积扩大约400倍。()

题型:问答题 简答题

阅读理解。

     American culture is unique because it is formed and developed under certain conditions.The

major factors contributing to the making of this flew nation and the forming of a new culture are

the hard environment, ethnic diversity(多民族) and plural religion, which is quite different from

other nations in the world. What is more, these elements are still influencing the American culture.

     The early immigrants who were English Puritans settled down in northeast part of America.

From 1607 to 1892, frontiers were pushed further west.The frontiersmen looked for a land of

rich resources and a land of promise, opportunity and freedom.Actually they looked for a better

life.So individualism(个人主义), selfreliance, and equality of opportunity have perhaps been the

values most closely associated with the frontier heritage(遗产) of America.

     In history, people from different countries in the world rushed to America three times.They

brought their own culture to America and later on,different cultures were mixed together.Thus

the unique American culture is formed,a common cultural life with commonly shared values.

The fundamental American belief in individual freedom and the fight of individuals to practice

their own religion is at the center of religious experience in the United States.The great diversity

of ethnic backgrounds has produced religious pluralism; almost all of the religions of the world

are now practiced in the United States.

     Nowadays, we can see the continual influence of the three elements in the current American

society.American family is typically parents and their unmarried children.Middleaged and elderly

people generally do not live with their married children.The people in America have a very strong

desire to start a new life in a new place.Quite a number of people change residences every year.

The average American moves fourteen times in his lifetime.

1.We can learn from this article that________.

A.the frontiersmen left important society values for American culture

B.the early immigrants brought about the unique American culture

C.people in the world once rushed to America because of its unique culture

D.the American family members don't get along well with each other

2.What's the author's attitude towards American culture?

A.He is critical of it.  

B.He admires it very much.

C.He just states the facts.  

D.He looks down upon it.

3.The last paragraph is about________.

A.the family structure in American society

B.the influence of the three elements in the current American society

C.the new life style of American family

D.the reason why American people like to change residences

4.What might be the most suitable title of this article?

A.The Immigrants in America

B.Why American Culture Is Unique

C.The Influence of American Culture

D.Plural Religion and American Culture

题型:问答题 简答题

麝香内服一次剂量是()

A.0.03~0.1g

B.0.1~0.3g

C.0.01~0.03g

D.0.3~1g

E.0.6~1g

题型:问答题 简答题

某钢筋混凝土框架结构办公楼,采用先张法预应力混凝土管桩基础;承台底面埋深1.4m,管桩直径0.4m;地下水位在地表下2m。当根据土的物理指标与承载力参数之间的经验关系计算单桩竖向极限承载力标准值时,所需的土体极限侧阻力标准值qsk、极限端阻力标准值qpk,均示于下图中。[2009年真题]提示:本题按《建筑桩基技术规范》(JGJ94-2008)作答。

相应于荷载效应标准组合时,上部结构柱传至承台顶面的竖向力Fk为1100kN,力矩Mxk为240kN.m,Myk为0,承台及其以上土体的加权平均重度为20kN/m3。试问,最大的单桩竖向力值Nkmax(kN),最接近于下列何项数值?()

A.315

B.350

C.390

D.420

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