| Every human being, no matter what he is doing, gives
off body heat. The usual prob-lem is how to dispose of it. But the designers of
the Johnstown campus of the University of Pittsburgh set themselves the opposite
problem-how to collect body heat. They have de-signed a collection system which
utilizes not only body heat, but also the heat given off by such objects as
light bulbs and refrigerators as well. The system works so well that no
con-ventional fuel is needed to make the campus’s six buildings
comfortable. Some parts of most modern buildings-theaters and offices as well as classrooms-aremore than amply heated by people and lights and sometimes must be air-conditioned even in winter. The technique of saving heat and redistributing it is called "heat recov A. was difficult to collect B. came in a variety of forms C. was difficult to get rid of D. tended to be absorbed by physical objects 更多"{{B}}Passage 3{{/B}}{{B}}Questions "的相关试题: [单项选择]{{B}} Passage One
Questions 26 to 28 are based on the passage you have just heard.
{{/B}}
A. 1520. B. 6020. C. 1755. D. 1620. [单项选择]
A. Nearly 90 percent of groceries are packed in plastic bags. B. Plastic bags are used everywhere in the world. C. Almost one trillion plastic bags are used each year. D. Plastic bags contain poisonous chemicals. [单项选择]
A. The Russian name for the spacecraft means "traveler". B. It was launched toward the end of the 1950s. C. It was resulted from Soviet and American scientists. D. The spacecraft was a small aluminum ball fitted with a radio. [单项选择]{{B}}Passage 3{{/B}} {{B}}Questions 11 to 15 are based on the following passage.{{/B}}
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