下述对质量缺陷的描述中,最妥当的是()。 A.质量缺陷是指产品质量没有满足某个预期的

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问题:

下述对质量缺陷的描述中,最妥当的是()。

A.质量缺陷是指产品质量没有满足某个预期的使用要求

B.质量缺陷是指不可修复的质量问题

C.质量缺陷是专指造成较大经济损失的质量问题

D.质量缺陷是常见的、普遍存在的质量问题

考点:建筑八大员(九大员)继续教育建筑八大员(九大员)继续教育题库
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已知|a|=8,|b|=5,且|a+b|=a+b,求a﹣b的值  

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某导体的电阻是10W,通过它的电流是0.2A,通电10s,电流通过电阻产生的热量是_______J。

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Technology today has stolen away our voices and robbed our children of memories. I’ve been keeping count of how often people sing around the house these days. The fact is, they don’t.

My earliest memories are of my mother crooning lullabies(催眠曲) in a gentle low voice as she rocked each infant in turn. She said she “didn’t have a singing voice,” but her low, wavering alto will always mean comfort to me. Every time I have sat through the night with a feverish body or held a pre – schooler through a nightmare, the melodies returned, words appearing and disappearing like fragments of a dream but held together by the hum (低声吟唱)of love.

Today, young mothers are routinely presented with lullaby tapes at the baby shower. When baby cries, the idea goes, they will be able to switch on the high-tech audio system and the little one will drift off with the voices of strangers in his ears, perfectly on pitch. If I had my way, new parents would learn the songs themselves, throw out their stereos, and give their child the gift of their own sleepy voices through the midnight hours.

These days, when we go on a trip, my daughters take along tiny personal stereos and headphones. They are lost in their private worlds, and I can’t help wishing that at least here, in the car my girls would be forced to listen to their mother’s voice raised in lost – the – words again, sure I’m out-of-tune songs that they might then pass down to another generation. Those sophisticated earphones have robbed them of something I think every kid should carry from childhood car trips into adulthood.

I drove away from that party humming, and all the way home the good old songs kept tumbling out. Dammit (该死), I thought, why did I ever stop singing in the car and start turning on the radio instead? Why don’t I sign anymore while I’m doing the dishes? I’m going to yank those stereo wires right out of the wall when I get home. We’re going to sing grace before meals, sing coals around the piano, sing in the shower instead of switching on that waterproof radio that stol away our voices and our souls.

63.The author hates today’s technology because________

A.driving a car requires high concentration

B.children are learning pop songs from tapes

C.children have lost touch with good old songs

D.high – tech systems do not record the voices of aged people

64.The underlined sentence “the little one will drift off” in Paragraph 3 means that “________ ”.

A.the play of the high – tech system is of little use

B.the high – tech system will play on and on

C.the low voice will delight the baby

D.the baby will slowly go to sleep

65.To the author, the voices of strangers ________       .

A.are not familiar to the baby

B.lack the motherly love the baby needs

C.work better to stop the baby’s cry

D.surely sound more pleasant

66.What the author wishes to make her girls do is to________          .

A.help memorize the words while she is singing

B.take off their well – designed earphones

C.listen and learn the old songs from her

D.remember their childhood car trips

题型:单项选择题

Ⅰ型呼吸衰竭时()。

A.PaO2>60mmHg,PaCO2>50mmHg

B.PaO2>80mmHg,PaCO2>50mmHg

C.PaO2<80mmHg,PaCO2<50mmHg

D.PaO2<60mmHg,PaCO2>50mmHg

E.PaO2>60mmHg,PaCO2<50mmHg

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固定距标圈已够6圈,但间隔疏密不匀,这种情况说明()。

A、扫描梯波线性不好

B、辐射脉冲宽度不够

C、方波宽度不够宽

D、三者均不是

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