A. was inventing B. invented C. had invented D. has invented 4James Watt the steam engine.A.was inventingB.inventedC.had inventedD.has invented 5James Watt ___ the steam engine。 A. was inventing B. invented C. had invented D. 。 has invented 反馈 收藏...
[详解]句意:瓦特发明了蒸汽机。根据“Watt(瓦特) i...the steam engine(蒸汽机).”可知是指发明蒸汽机,invent“发明”,动词,动作发生在过去,应用一般过去时,故填(i)nvented。结果一 题目 Watt(瓦特) i___the steam engine(蒸汽机). 答案 invented 结果二 题目 Watt(瓦特) i___the steam engine(蒸汽机...
Watt Steam Engine 作者:Surhone, Lambert M.; Timpledon, Miriam T.; Marseken, Susan F. 页数:162 ISBN:9786131083815 豆瓣评分 目前无人评价 评价: 写笔记 写书评 加入购书单 分享到 推荐 我要写书评 Watt Steam Engine的书评 ···(全部 0 条)...
Steam Engines • Efficiencies were only 1% for converting heat to mechanical energy. • Now they are above 30%. • Class of engine known as external combustion engines. Fuel is burned outside the pressurized part of the engine • Results in low COand NO emissions ...
百度试题 结果1 题目James Watt ___ ___ the steam engine. 瓦特发明了蒸汽机 A. was inventing B. invented C. had invented D. has invented 相关知识点: 试题来源: 解析 B 反馈 收藏
百度试题 结果1 题目Watt's steam engine introduced a new a. year b. time c. era 相关知识点: 试题来源: 解析 C 反馈 收藏
Steam engine and Watt Great inventors change the world. They help people live a better life.伟大的发明家改变了世界。他们帮助人们过上更好的生活 I admireJames Wattthe most. 我最佩服詹姆斯·瓦特。 When Watt was a child, he was a curious boy.瓦特小时候是个好奇的男孩。 One day he saw water...
PROJECT: WATT STEAM ENGINE.The article focuses on development of the Steam Engine by Scottish engineer Sir James Watt in 1763-1775. Topics discussed include naming of the unit of power watt after the engineer, coinage of the term horsepower by Watt to describe the output of the machine as ...
6.According to paragraph 2, Watt's steam engine differed from earlier steam engines in each of the following ways EXCEPT: A. It used steam to move a piston in a cylinder. B. It worked with greater speed. C. It was more efficient in its use of fuel. D. It could be used in many...
A. farms B. homes C. factories and transportation D. schools 相关知识点: 试题来源: 解析 C。解析:“James Watt's steam engine was a major breakthrough. It powered factories and transportation, making production more efficient.”。 反馈 收藏 ...