What was the first jet engine made of?Jet Engine:A jet engine refers to a reaction engine that creates thrust for motion. Further, works by taking in air through a fan, speeding up and compressing the air through a blade, and mixing the air with fuel for combustion. Although they have ...
4、The soldiers soon reached( )was once an old temple( )the villagers used as a school. 【A.which;where B.what;which C.where;which D.what;where】答:选B,动词reach后接宾语从句,从句缺少宾语,where不可,which引导宾语从句时表疑问含义“哪一个…”而此句中并非疑问含义,不知道哪一座庙宇,而是用w...
741.He made numerous contributions to the world, the most well-known being the general theory of relativity and the famous formula E=mc2. 他为世界作出了无数的贡献,最为出名的当数广义相对论和著名的方程式E=mc2。 742....
Who invented the very first smartphone? Who invented the first ship? Who invented football? Who invented the first cell phone? Who used the telephone when it was first invented? How was the first telephone invented? Who invented the first automobile engine?
A. It had no engine inside. B. It produced much noise。 C. It had no seat for anyone。 D. It was made out of metal. E. [细节理解题.根据第一段中的“there were no seats-the pilot, who was the only person on the plane,had to lie flat on the wing"可知,怀特兄弟制造的第一架...
Why is this a problem? Because without curiosity we will lose the spirit of innovation and entrepreneurship. We will see unimaginative governments and dying corporations make disastrous decisions. We will lose a vital part of what has made humanity as a whole so successful as a species. ...
Fewer wolves and thieves meant less demand for dogs for protection; the internal combustion engine (内燃机) made horses unneeded; modern sanitation (卫生设备) kept rats in check and made cats less useful. Domestic animals ...
Who is it that has made Fr 2、ed what he is now? 是谁把弗雷德培养成现在这个样子 的?3. 表示 “的数量或数目 ”:Our income is now double what it was ten years ago.我们现在的收入是 10 年前的两倍。The number of the students in our school is ten times what it was before liberation....
The machine there, named Jet, used fusion engines (发动机) to make the same amount of energy as four wind turbines (涡轮机) make, reported The Cuardian.In the past, no experiment could mate more energy than what was used to start the fusion engine. This new experiment, although it only...
I let him keep the ten dollars and the farm too, for I had carried it far enough; or rather, to be generous, I sold him the farm for just what I gave for it, and, as he was not a rich man, made him a present of ten dollars, and still had my ten cents, and seeds, and ...