超声耦合是指超声波在()的声强透射率。

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问题:

超声耦合是指超声波在()的声强透射率。

考点:钢轨探伤工考试技师钢轨探伤工技师钢轨探伤工题库
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陆地伸进海洋的凸出部分叫

A.岛屿

B.半岛

C.海湾

D.大陆

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Some politicians are scurrying about with much zest and anticipation. It’s time, their polls inform them, to find the quick fix for what they have determined is a society plagued by the irregular heartbeat of deficient values.

But there are contradictions that intrude on this denunciatory atmosphere. If there are moral omissions in the society, they cannot be sealed by instant, slenderly based attacks on entertainment. The plain fain fact is we are rearranging our priorities in the wrong way.

We are today misplacing our energies and our funding by directing all sorts of incentives to high schools and colleges. Too late. The moral scaffolding has been built by then, for better or worse. How then to begin this revision of life conduct We must introduce in pre-school, and keep alive through grade five, a new school course.

The course could be titled, "What is right, and what is plainly wrong. " For 30 minutes each day, the teacher would illuminate for these very young children what William Faulkner labeled "the old verities", the words that construct and implement the daily moral grind in every durable society must engage if it is to be judged a "just" society.

These are words like duty, honor, service, integrity, pity, pride, compassion and sacrifice, plus the clear admonition that violence is wrong. To the teaching of the meaning of those words must be added that cleansing rule of treating other people as you would want them to treat you. And most of all to make sure that these kids understand with growing clarity that home, school and church are the sanctuaries for their later life.

There is a grand simplicity to this kind of school course. It enters a child’s mind early, burrowing deep into those recesses of the human brain that even today advanced medical science has not been able to penetrate.

If you ask enough people, you will find that most of us remember our first-or second-grade teacher. I remember Miss Corbett and Miss Walker, who read to us before we really understood, but the words had weight and allure. We listened and, without really knowing it, we learned and saved what we learned. Perhaps it was because what we heard in those early school years was the first entry into our learning vessel.

Absent this kind of early instruction, absent the building of this moral shield, no congressional law, no presidential executive order, no fiery rhetoric will salvage a child’s conduct nor locate a missing moral core.

With respect to the rectification of the situation the author believes that().

A. it’s easy to carry moral education at and above high school level

B. high school students don’t need any further moral education

C. no return is to be gained on the investment in moral education

D. moral education in primary school or still earlier should be much emphasized

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材料一:有一种节约叫“光盘”,有一种公益叫“光盘”,有一种习惯叫“光盘”!“光盘行动”是2013年1月16由腾讯微博认证用户徐侠客在微博上首先发起。微博一经发布,立即引起众多媒体和网友的热烈反响。抵制“舌尖上的浪费”成为中国“热词”,吃饭打包、杜绝剩饭的“光盘行动”渐然成风。蛇年春节成为了最节俭的春节之一。“兴家犹如针挑土,败家好似浪淘沙”。2013年中 * * * * 习 * * 在新华社一份《网民呼吁遏制餐饮环节“舌尖上的浪费”》的材料上作出批示,要求厉行节约、反对浪费。各地政府纷纷贯彻落实该批示精神,要求杜绝党员干部用公款铺张浪费。

材料二:文化产业是市场经济条件下繁荣发展社会主义文化的重要载体。近年来,“红色”影视剧,从新的角度诠释革命英雄人物,顺应了当代观众的审美要求,实现了社会效益与经济效益的统一。如何进一步加快文化产业的发展成为人大代表关注的热点。

请结合材料一,运用《政治生活》关于公民、政府、人大、党等方面的知识,谈一谈怎样才能避免各种奢侈浪费。

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一般钻碳钢孔时,冷却润滑液的作用是()。

A.冷却为主

B.润滑为主

C.冷却、润滑兼并

D.清洗为主

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提高制冷系数的正确途径是()。

A.尽量使实际循环接近逆卡诺循环

B.尽量增大冷剂在冷库和冷凝器中的传热温度

C.降低冷库温度

D.提高冷却水温度

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