更多“掌握若干概念之间关系的学习称为 【 】”相关的问题
NEW MATERIAL CAN COOL BUILDINGSResearchers at Stanford University have developed a new material that can move heat out of buildings and into space. The material can cool buildings even on hot days.The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panels. However, instead of turning sunlight into energy as solar panels do, the material turns heat into infrared radiation.Shanhui Fan is an electrical engineering professor at Stanford University. He says that the panels have a layer of material that is like sand. The panels also act like a mirror. They take heat out of buildings and reflect the light from the sun. Both the heat and sunlight are sent 100 kilometers into outer space.The panels are cool to the touch, even in the sun. Researchers say they can reduce the indoor temperature to nearly 5 degrees Celsius below the temperature outside.Mr. Fan says it is like having a window into space. He says the heat is sent directly into space without warming the air. Buildings in developing countries that do not have electricity or air conditioning could use the panels.In areas where one is off-grid,there is a significant potential benefit for storing medicine or even food. In many of these situations, being able to reduce the temperature is important. And this would provide a way to do it.The Stanford researchers described their technology in the science publication _Nature_. They say the main problem is creating actual cooling systems using the high-tech panels. It may be possible to develop a cooling spray technology in the next three to five years that could be used on existing solid structures.1. The material can cool buildings only on cold days.{T; F}2. The material turns heat intoinfrared radiation because it is a very thick sheet with many layers that could be placed on a roof like solar panels.{T; F}3. The heat of the buildings and sunlight are sent 100 kilometers into outer space by the panels.{T; F}4. The off-grid areas may use the panels to reduce the temperature of buildings to store medicine or even food.{T; F}5. A cooling spray technology may be developed in the near future that could be used on existing solid structures.{T; F}
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关于RhD变异体抗原，以下哪种说法是正确的（）。
A、部分D者的D抗原与某些抗-D试剂是不发生凝集反应的
B、弱D,其抗原与正常D抗原相比,抗原的质量发生了变异,数量也减少
C、部分D,其抗原与正常D抗原相比,抗原的质量没有发生变化
D、部分D,其抗原与正常D抗原相比,抗原的质量没有发生变异
E、弱D,其抗原与正常D抗原相比,抗原的质量发生了变异,数量不变
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问卷的主体部分和背景部分在数据分析中通常承担哪种角色（）。
A.因变量、自变量
B.自变量、因变量
C.因变量、潜变量
D.潜变量、因变量
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If the films showed are familiar to the students, the students should ______.
A. submit an extensive written critique
B. try to see them again with new eye
C. watch them twice
D. drop the course
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具玻璃样光泽（）
A.石膏 B.雄黄 C.芒硝 D.朱砂 E.信石
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一号线地铁列车即使在接触网电源切断后，VVVF逆变器内的电容器上也会有残存的电荷。
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筒瓦屋面背脊和好后，在上面砌一皮（），将背脊找平，铺上砂浆，再将筒瓦均匀排列于砂浆之上，使其窝牢不动。
A.盖瓦
B.仰瓦
C.瓦条
D.勾头
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一平面简谐波沿x轴正方向传播，波动方程为，该波在t=0.5s时刻的波形图是（）。
一平面简谐波沿x轴正方向传播，波动方程为，该波在t=0.5s时刻的波形图是（）。
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谁捉住了史文恭（）？
A.宋江
B.林冲
C.卢俊义
D.武松
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合同外计价必须满足（）可计价。
A.现场人员口头承诺
B.现场签证单（按规定签字手续齐全）
C.签订补充补充协议
D.上一级单位批复
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低压系统应选择（）泵、中压系统应选择（）泵、高压系统应选择（）泵。
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某工业炉砌筑工程由某机电公司负责。由于工程设计要求十分严格，于是机电公司认真制定了两种工业炉砌筑施工方案，经分析和对比，选出一项最优方案，按规定制定安全技术措施，并进行安全技术交底。《工业炉砌筑工程施...《工业炉砌筑工程施工及验收规范》规定，工业炉砌筑冬期施工时，高铝水泥耐火浇注料的温度不应超过( )。
A．20℃
B．40℃
C．40℃
D．50℃
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For more than a century and a half, Patek Philippe has been known as the finest watch in the world. The reason is very simple. It is made differently. It’s made by using skills and techniques that others have lost or forgotten. It is made with attention to detail very few people would notice. It is made, we have to admit, with a total disregard for, time. If a particular Patek Philippe movement requires four years of continuous work to bring to absolute perfection, we will take four years. The result will be a watch that is unlike any other. A watch that conveys quality from first glance and first touch. A watch with a distinction: generation after generation it has been worn, loved and collected by those who are very difficult to please; those who will only accept the best. For the day that you take delivery of your Patek Philippe, you will have acquired the best. With your Patek Philippe, you will have acquired the best. A watch that was made to be treasured.
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根据票据法律制度的规定，下列选项中，票据债务人可以拒绝履行义务，行使票据抗辩权的有（ ）。A.背书
根据票据法律制度的规定，下列选项中，票据债务人可以拒绝履行义务，行使票据抗辩权的有（ ）。 A.背书不连续 B.持票人向票据债务人交付的货物有严重的质量问题 C.票据金额的中文大写与数码记载的内容不一致 D.票据上没有记载付款地 此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
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导柱和导套是注塑模能精确工作的导向零件，它们的生产工艺是（）。
A . 锯、锉、刨
B . 铣、磨、研
C . 车、钻、磨、研
D . 电火花加工、加工中心加工、成型加工
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