ZD(J)9系列电动转辙机应定期检查转辙机内部配线,保证接触良好,如有发现内部配线破

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问题:

ZD(J)9系列电动转辙机应定期检查转辙机内部配线,保证接触良好,如有发现内部配线破损,应用绝缘胶布包扎处理。()

考点:信号工考试信号修配信号修配题库
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化简:(x-y-z)-(x+y-z)-(x+y-z).

题型:判断题

导致心力衰竭发病和死亡的主要原因是()

A.心室重构

B.心内膜炎

C.心室内附壁血栓

D.活动风湿

E.心内膜下心肌梗死

题型:判断题

在Access中,学生与课程之间的关系是______。

A.一对一

B.一对多

C.多对一

D.多对多

题型:判断题

There is a difference between science and technology. Science is a method of answering (1) questions; technology is a method of solving practical problems. Science has to do with discovering the facts and relationships between (2) phenomena in nature and with establishing theories that (3) to organize these facts and relationships; technology has to do with tools, techniques, and (3) for applying the findings of science. Another (5) between science and technology has to do with the progress in each.

Progress in science (6) the human factor. Scientists, who seek to understand the universe and know the truth within the highest degree of (7) and certainty, cannot (8) their own or other people’s likes or dislikes or to popular ideas about the fitness of things. What scientists discover may shock or (9) people-as did Darwin’s theory of evolution. But even an unpleasant truth is (10) than likely to be useful; besides, we have the choice of refusing to believe it! But (11) so with technology; we do not have the choice of refusing to hear the sound produced by a supersonic aircraft flying overhead; we cannot refuse to breathe polluted air. (12) science, progress in technology must be measured (13) the human factor. The purpose of technology is to serve people—people (14) , not merely some people; and future generations, not merely those who presently wish to (15) advantage for themselves.

We are all familiar with the (16) use of technology. Many people blame technology itself (17) widespread pollution, resource depletion (枯竭) and even social decay in general—so much (18) the promise of technology is " (19) " That promise is a cleaner and healthier world. If wise applications of science and technology do not (20) a better world, what else will

14()

A. in nature

B. on average

C. on the whole

D. in general

题型:判断题

序曲《仲夏夜之梦》是()音乐家()的成名作。

A.德国;门德尔松

B.德国;舒曼

C.德国;勃拉姆斯

D.意大利;罗西尼

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