媒体接入控制协议MAC位于UTRAN空中接口的()之上。 A.网络层 B.物理层 C

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问题:

媒体接入控制协议MAC位于UTRAN空中接口的()之上。

A.网络层

B.物理层

C.接入层

D.数据链路层

考点:移动通信技术移动通信技术题库
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今译:此《内经》治燥淫之旨,可赞一辞者也。至於肺气膹郁,痿喘呕欲,皆伤燥之剧病,又非制胜一法所能理也。(《秋燥论》)

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消化性溃疡的最常见合并症是

A.幽门狭窄
B.穿孔
C.癌变
D.出血
E.黏膜萎缩

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试述通风发酵设备中的机械搅拌发酵罐必须满足的基本条件?

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实行持仓限额制度的目的在于( )。

Ⅰ.防范操纵市场价格的行为

Ⅱ.防止交割量过大

Ⅲ.防止期货市场风险过度集中于少数投资者

Ⅳ.防止市场流动性过大

A.Ⅰ、Ⅱ
B.Ⅰ、Ⅲ
C.Ⅱ、Ⅲ
D.Ⅱ、Ⅱ、Ⅳ

题型:单项选择题

You’ve had a problem, you’ve thought about it till you were tired, forgotten it and perhaps slept on it, and then flash! When you weren’t thinking about it suddenly the answer has come to you, as a gift from the gods.

Of course all ideas don’t come like that, but the interesting thing is that so many do, particularly the most important ones. They burst into the mind, glowing with the heat of creation. How they do is a mystery. (46) Psychology does not yet understand even the ordinary process of conscious thought, but the emergence of new ideas by a "leap in thought" is particularly intriguing, because they must have come from the somewhere. For the moment let us assume that they come from the "unconscious". (47)This is reasonable, for the psychologists use this term to describe mental processes which are unknown to the subject, and creative thought consists precisely in what was unknown becoming known.

(48) It seems that all truly creative activity depends in some degree on these signals from the unconscious, and the more highly intuitive the person, the sharper and more dramatic the signals become.

But growth requires a seed, and the heart of the creative process lies in the production of the original fertile nucleus from which growth can proceed. (49) This initial step in all creation consists in the establishment of a new unity from disparate elements, of order out of disorder, of shape from what was formless. The mind achieves this by the plastic reshaping, so derived from a new unit, of a selection of the separate elements derived from experience and stored in memory. Intuitions arise from richly unified experience.

(50) This process of the establishment of new form must occur in pattern of nervous activity in the brain, lying below the threshold of consciousness, which interacts and combines to form more comprehensive patterns. Experimental physiology has not yet identified this process, for its methods are as yet insufficiently refined, but it may be significant that a quarter of the total bodily consumption of energy during sleep goes to the brain, even when the sense organ are at rest, to maintain the activity of ten thousand million brain cells. These cells, acting together as a single organ, achieve the miracle of the production of new patterns of thought. No calculating machine can do that, for such machines can "only do what we know how to design them to do", and these formative brain processes obey laws which are still unknown.

Can any practical conclusions be drawn from the experience of genius Is there an art of thought for the ordinary person Certainly there is no single road to success; in the world of the imagination each has to find his own way to use his own gift.

(50) This process of the establishment of new form must occur in pattern of nervous activity in the brain, lying below the threshold of consciousness, which interacts and combines to form more comprehensive patterns.

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