与蚀变基性—超基性岩有关的宝玉石矿床有哪些?

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问题:

与蚀变基性—超基性岩有关的宝玉石矿床有哪些?

考点:珠宝鉴定师珠宝鉴定师题库
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根据《建筑设计防火规范》厂房的安全疏散规定,耐火等级为三级的丙类多层厂房内任一点到最近安全出口的距离最大应为()。

A.25

B.40

C.50

D.60

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下列各句中,加粗的成语使用不恰当的一项是[ ]

A.文理科知识不仅应该互相补充,还应该互相渗透,实际上,自然与社会决不可能是泾渭分明的。

B.一些人的散文不仅仅是形散而且神更散,以至于把一个好端端的文学体裁搞得没有一点文学的味道,读之便味同嚼蜡,不忍卒读

C.如今互联网已迅速进入“围脖时代”,不仅名人热衷于“织围脖”,普通人也纷纷成为“织男”“织女”,乐此不疲

D.北京时间2月7日,在尼克斯VS爵士的比赛中,林书豪首发出场,全场拿下28分、8次助攻,完成了从默默无闻到一鸣惊人的华丽转身。

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D

To err is human. To blame the other guy is even more human.

Common sense is not all that common.

Why tell the truth when you can come up with a good excuse

These three popular misquotes(戏谑的引语) are meant to be jokes, and yet they tell us a lot a-bout human nature. To err, or to make mistakes, is indeed a part of being human, but it seems that most people don’t want to accept the responsibility for the problem. Perhaps it is the natural thing to do. The original quote about human nature went like this: "To err is human, to forgive, divine (神圣的)."This saying mirrors an deal: people should be forgiving of others’ mistakes. Instead, we tend to do the opposite—find someone else to pass the blame on to. However, taking responsibility" for something that went wrong is a making of great maturity.

Common sense is what we call clear thought. Having common sense means having a good general plan that will make things work well, and it also means staying with the plan. Common sense tells you that you take an umbrella out into a rainstorm, but you leave the umbrella home when you hear a weather forecast for sunshine. Common sense does not seem to be common for large organizations, because there are so many things going on that one person cannot be in charge of everything. People say that in a large company," the right hand does not know what the left hand is doing. "

And what is wrong with a society that thinks that making up a good excuse is like creating a work of art One of the common problems with making excuses is that people, especially young people, get the idea that it’s okay not to be totally honest all the time. There is a corollary(直接推论) to that: if good excuse is "good" even if it isn’t honest, then where is the place of the truth

According to the author, what is a sign of a man’s maturity()

A.Doing things his own way.

B.Bearing responsibility for his mistakes.

C.Making as few mistakes as possible.

D.Thinking seriously about his wrongdoing.

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MTM改善前牙区美观及咬合可实现()

A.纠正重度前牙反牙合

B.关闭前牙间隙

C.牙弓间隙足够时,纠正前牙扭转、错位

D.纠正牙及牙槽性前牙反牙合

E.除A外皆可

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局部水头损失的基本计算公式及概念什么?

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