Theoretical perfect combustion in a diesel engine yields by-products of_____.
A.aldehydes and carbon dioxide
B.water vapor and carbon monoxide
C.nitrogen and carbon monoxide
D.water vapor and carbon dioxide
如搜索结果不匹配，请 联系老师 获取答案
更多“Theoretical perfect combustion…”相关的问题
第1题
Questions 21 to 25 are based on the following passage.
There is a difference between science and technology. Science is a method of answering theoretical questions; technology is a method of solving practical problems. Science has to do with discovering the facts and relationships between observable phenomena in nature and with establishing theories that serve to organize these facts and relationships; technology has to do with tools, techniques, and procedures for implementing the finding of science.
Another distinction between science and technology has to do with the progress in each.
Progress in science excludes the human factor. Scientists, who seek to comprehend the universe and know the truth within the highest degree of accuracy and certainty, cannot pay attention to their own or other people's likes or dislikes or to popular ideas about the fitness of things. What scientists discover may shock or anger people-as did Darwin's theory of evolution. But even an unpleasant truth is more than likely to be useful; besides, we have the choice of refusing to believe it! But hardly so with technology; we do not have the choice of refusing to hear the sonic boom produced by a supersonic aircraft flying overhead; we do not have the option of refusing to breathe polluted air; and we do not have the option of living in a non-atomic age. Unlike science progress, technology must be measured in terms of the human factor. The legitimate purpose of technology is to serve people in general, not merely some people; and future generations, not merely those who presently wish to gain advantage for themselves. Technology must be humanistic if it is to lead to a better world.
21. The difference between science and technology lies in that _____.
A) the former provides answers to theoretical questions while the latter to practical problems
B) the former seeks to comprehend the universe while the latter helps change the material world
C) the former aims to discover the inter-connections of facts and the rules that explain them while the latter, to discover new designs and ways of making the things we use in our daily life
D) all of the above
22. Which of the following may be representative of science？
A) The improvement of people's life.
B) The theory of people's life.
C) Farming tools.
D) Mass production.
23. According to the author, scientific theories _____.
A) must be strictly objective
B) usually take into consideration people's likes and dislikes
C) should conform. to popular opinions
D) always appear in perfect and finished forms
24. The author states that technology itself _____.
A) is responsible for widespread pollution and resource exhaustion
B) should serve those who wish to gain advantage for themselves
C) will lead to a better world if put to wise use
D) will inevitably be for bad purpose
25. The tone of the author in this passage is _____.
A) positive
B) negative
C) factual
D) critical
第2题
第4题
A. The theoretical maximum cable length
B. The theoretical maximum bandwidth
C. The theoretical port limit of the cable
D. The quality level of the copper wiring used
第5题
A.Physical
B.Emotional
C.Practical
D.Theoretical
第6题
第7题
A.300 Hz
B.3．4 KHz
C.6．8KHz
D.8 KHz
为了保护您的账号安全，请在“赏学吧”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
微信搜一搜
赏学吧
微信搜一搜
赏学吧
