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课时提升作业(三十九)
选修7 Modules 5、6
Ⅰ. 阅读理解
A
Batteries are included, but the charger’s not. The Nokia E-Cu concept phone doesn’t need to plug in; it charges from any heat source. Designer Patrick Hyland says it can even work off the warmth of your pocket. The first time“it would take approximately seven hours to reach full charge, then after that it’s continuously charging by keeping the phone in areas between 86 degrees and 104 degrees Fahrenheit. ”That’s one hot pocket.
He’s put a thermo generator(热偶发电器)inside the phone that transforms heat into electric potential energy. To better conduct the heat to that little power plant in your pocket, the E-Cu(E for energy, Cu for copper)is coated by copper backing with heat sinks like those normally used to keep electronics from overheating.
