A. It can produce cold air only in fan mode. B. It can run for up to 18 hours if fully charged. C. It has a high price of $159 on the Internet now. D. It provides a better portable cooling solution. 相关知识点: 试题来源: 解析 27.D 28.C 29.C 30.D 反馈 收藏 ...
This will be my first time camping with a phone, and since we’ll have limited electricity, I’m bringing a car charger, our Eton BoostTurbine Portable Charger with a hand crank, and a solar charger. At Long Point we woke before sunrise to set up the mist nests and in retrospect, a...
Whirlpool founder Lou Upton bought the patent for a hand-washing machine from a failed business venture and in 1911, with his uncle Fred, patented a wringer washer driven by an electric motor. He and his family started the Upton Machine Co. to produce and sell the machines. The company mad...