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【单选题】

Many objects in daily use have clearly been influenced by science, but their form and function, their dimensions and appearance were determined by technologists, artisans, designers, inventors, and engineers--using nonscientific modes of thought. Many features and qualities of the objects that a technologist thinks about cannot be reduced to unambiguous verbal descriptions; they are dealt with in the mind by a visual, nonverbal process. ①In the development of Western technology, it has he en nonverbal thinking, by and large, that has fixed the outlines and filled in the details; and rockets exist not because of geometry or thermodynamics (热力学), but because they were first a picture in the minds of those who built them.
The creative shaping process of a technologist’s mind can be seen in nearly every artifact that exists. For example, in designing a diesel engine, a technologist might impress individual ways of nonverbal thinking on the machine by continually using an intuitive sense of rightness and fitness. What would be the shape of the combustion chamber Where should the valves be placed Should it have a long or short piston Such questions have a range of answers that are supplied by experience, by physical requirements, by limitations of available space, and not least by a sense of form. Some decisions, such as wall thickness and pin diameter, may depend on scientific calculations, but the nonscientific component of design remains primary.
Design courses, then, should be an essential element in engineering curricula. Nonverbal thinking, a central mechanism in engineering design, involves perceptions, the stock in trade of the artist, not the scientist. ②Because perceptive processes are not assumed to entail. "hard thinking", nonverbal thought is sometimes seen as a primitive stage in the development of cognitive processes and infeiror to verbal or mathematical thought, ③But it is paradoxical that when the staff of the Historic American Engineering Record wished to have drawings made of machines and isometric(等比例 的)views of industrial processes for its historical record of American engineering, the only college students with the requisite abilities were not engineering students, but rather students attending architectural schools.
④If courses in design, which in a strong]y ytial engineering curriculum provide the backgound required" for practical problem solving, are not provided, we can expect to encounter silly but costly enors gccurring in advanced engineering systems. For example, early models of high-speed railroad cars loaded with high-tech controls were unable to operate in a snowstorm because the fan ed snow into the electrical system. ⑤Absurd random failures that plague automatic control systems are not merely trivital aberrations(失常); they are a reflection of the chaos that results when design is assumed to be primarily a prgblem in mathematics:
Which of the following does the author seem to be in agreement with

A.
Mathematical thinking is essential to any design course.
B.
Nonverbal thinking has its advantage over other perceptive processes.
C.
Engineering design demands scientific thought.
D.
Artists play a primitive role in engineering design.
题目标签:热力学力学比例
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【单选题】热力学中平衡态指______。

A.
系统宏观性质不随时间改变的状态
B.
没有外界作用时系统宏观性质不随时间改变的状态
C.
外界作用不变时,系统宏观性质不随时间改变的状态
D.
没有外界作用时的状态

【单选题】下列哪项不属于动脉导管未闭的血动力学改变()。

A.
左向右分流
B.
右心室为混合血
C.
肺动脉压的增高
D.
肺动脉血含氧量增加
E.
体循环血量相对降低

【单选题】快速舒张期在血流动力学上的意义()

A.
血液快速从左心室射到主动脉
B.
血液在主动脉反弹回流到左心室
C.
血液在这期间快速、大量从左心房充盈到左心室
D.
血液从右心房缓慢充盈到右心室
E.
血液从左心房缓慢地充盈到左心室