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甲有一辆汽车要卖掉，便对乙方说：“你先开回去试用，满意的话你就买下，价款8万元。”根据民法和合同法原理及有关规定，请回答下列问题。 设甲、乙约定的试用期间届满，乙对是否购买未作表示的，则( )。
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减少指令执行周期数是RISC计算机性能提高的基础，它是通过 (17) 、指令控制部件 (18) 微代码、 (19) 寄存器、 (20) 寻址方式、限制访问内存来实现的。 (21) 都是与RISC芯片有关的名词。
In 1983, when oil process were till high in my area, I installed a ground-source heat pump in my brand-new, and insulated 1,600-square-foot house. It cost several thousand dollars more than comparable systems that use oil, gas, or wood, but I figured I’’d recover my higher initial expense in a few years through lower energy bills. True, my heat pump runs on electricity-an expensive commodity where I live. But most of its energy comes from the earth: a propylene-glycol solution circulates through 1,200 feet of two-inch-diameter plastic pipe buried three feet deep in a field next to my house. As it travels, the solution absorbs heat from the surrounding soil, even when soil temperature drops below freezing. My ground-source heat pump also offers important benefits that have nothing to do with economics. *Minimal fire hazard-no chimney, firebox, or heating elements-only pumps, fans, and a compressor. *Cleanliness-no combustion products, thus no chance of my heating system polluting the indoor air, leaving scummy deposits on walls and furniture. *Reliability-solid-state electronic controls and sealed beatings almost eliminate breakdowns. *No maintenance-no wood to cut, ashes to haul, or chimney to clean. *Convenience-The system runs automatically, even switching from heating to air conditioning as needed. I can simply lock the door and go away for a day, week, or month. Not only did I expect to start saving on energy costs immediately, but I also expected those savings to grow over the years as oil process continued to soar. Since I was wrong about oil prices, the big dollar savings I’’ d hoped for haven’’ t materialized. Nevertheless, I am satisfied, all things considered. The best title for the passage is ______.
His ideas are invariably condemned as_______by his colleagues.
Do not______ yourself; it was not your fault.
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