以下论述正确的是()。A、自然美是现实美的形式之一 B、现实美是自然美的组成部分 C

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问题:

以下论述正确的是()。

A、自然美是现实美的形式之一

B、现实美是自然美的组成部分

C、艺术美是现实美的基础

D、自然美与现实美无关

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近年来临床输血中细菌污染反应增多的最主要原因

A.输血时未严格按无菌操作规程要求操作
B.塑料输血袋本身污染细菌
C.血小板在体外保存于室温,细菌相对容易生长繁殖
D.血液成分分离制备时操作不当导致污染细菌
E.采血时皮肤消毒不严

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浮选的整个过程实际上是煤粒与气泡相对()、()、()、()的过程。

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联合国的原则简单地说就是维护国际和平与安全,促进国际合作与发展。

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Universities are institutions that teach a wide variety of subjects at advanced levels. They also carry out research work aimed at extending man's knowledge of these subjects. The emphasis given to each of these functions   __21_____from university to university, according to the views of the people in ___22___ and according to the resources available. The smaller and newer universities do not ____23_____ the staff or equipment to carry out the vast research projects possible in larger institutions. But most experts agree that some research activity is _____24______ to keep the staff and their students in ____25_____ with the latest developments in their subjects.

Most students attend a university mainly to ____26_______ the knowledge needed for their chosen profession. Educationists believe that this aim should not be the only one. Universities have always aimed to produce men and women with judgment and wisdom as well as knowledge. For this reason, they ____27____ students to meet others with differing _____28_____ and to read widely to increase their understanding in many fields of study. Upon a secondary school course, a student should be interested enough in a subject to enjoy gaining knowledge for its own _____29_______. He should be prepared to ____30______ every effort to study his chosen field in depth. He should have an ambition to make some truthful contribution to man's knowledge.

21.A.turns       B. ranges       C. moves            D. varies

22.A. order      B. place         C. control              D. favor

23.A. occupy     B. possess       C. involve          D. spare

24.A. natural     B.casual       C. possible          D.essential

25.A. effect      B. mind        C. touch                D. grasp

26.A. acquire     B. accept       C. endure          D. ensure

27.A. arrange     B. suggest     C. encourage              D. anticipate

28.A. histories   B. interests          C. expressions         D. curiosities

29.A. object      B. effect        C. course           D. sake

30.A. take       B. make          C. suffer             D. pay

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填罐推车机运行时,严禁在()站人。

A.车辆运行范围内

B.罐笼出车端

C.井口l5m范围内

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