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  3. An experimental microwave clothes dryer heats neither air nor cloth. Rather, it

An experimental microwave clothes dryer heats neither air nor cloth. Rather, it

游客2024-01-13  12
问题 An experimental microwave clothes dryer heats neither air nor cloth. Rather, it heats water on clothes, thereby saving electricity and protecting delicate fibers by operating at a lower temperature. Microwaves are waves that usually heat metal objects, but developers of a microwave dryer are perfecting a process that will prevent thin metal objects such as hairpins from heating up and burning clothes. Which of the following, if true, most strongly indicates that the process, when perfected, will be insufficient to make the dryer readily marketable?
选项 A、Metal snap fasteners on clothes that are commonly put into drying machines are about the same thickness as most hairpins.
B、Many clothes that are currently placed into mechanical dryers are not placed there along with hairpins or other thin metal objects.
C、The experimental microwave dryer uses more electricity than future, improved models would be expected to use.
D、Drying clothes with the process would not cause more shrinkage than the currently used mechanical drying process causes.
E、Many clothes that are frequently machine-dried by prospective customers incorporate thick metal parts such as decorative brass studs or buttons.
答案 E
解析 本题的推理为：微波干燥机具有很大优点，但其缺陷是微波通常加热金属物品，因此微波干燥机完善一项程序即阻止大头针等细金属被加热后就可以进入市场。若将来的消费者经常用机器干燥的衣服包括了粗金属部件，正如(E)所说，那么即使完善了上述程序，该干燥机也不能立刻进入市场，所以(E)正确。(A)说的是与上面所提程序的共同点，因此支持了该干燥机可以立即进入市场。(B)、(C)、(D)都在部分程度上支持了干燥机在完善该程序之后可以进入市场。
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