求翻译:The very first piloted helicopter was invented by Paul Cornu.是什么意思?待解决 悬赏分:1 - 离问题结束还有 The very first piloted helicopter was invented by Paul Cornu.问题补充:匿名 2013-05-23 12:21:38 第一个驾驶直升机是由保罗大角发明的。 匿名 2013-05-23 12:23:18 匿名 20...
The very first piloted helicopter was invented by French engineer Paul Cornu (1881–1944) in 1907. However, his design did not work, and French inventor Etienne Oehmichen (1884–1955) was more successful. He built and flew a helicopter one kilometer in 1924. Anotherearly helicopterthat flew fo...
A. The helicopter was invented by an American.B. The traffic light was invented in the 1930s.C. The yo-yo was invented by a college student.D. Percy Spencer invented the microwave oven in 1947. 相关知识点: 试题来源: 解析 【解析】41.C 42.B 43.D 44.A 45.D ...
C. The yo-yo was invented by a college student. D. Percy Spencer invented the microwave oven in 1947. 相关知识点: 试题来源: 解析 1.Ballpoint pen:1938是答案提示。 2.Internet:1969是答案提示。 3.Electric chair:Thomas Edison是答案提示。 4.从发明年份可知1876年最早,对应Telephone。 5.Microwav...
Although many people throughout history drew or thought of ideas for helicopters, the first practical helicopter was invented by Igor Sikorsky of the...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
The helicopter was damaged by lightning, but landed ___. (safe) 免费查看参考答案及解析 题目: As a parent trainer I am now dealing with helicopter parents—the ones who___all the difficulties and make it smooth sailing for their kids. Sometimes watching kids___without jumping in to fix it...
He was one of the greatest artists of his day. By the time he was twenty years old, he was called a master painter, and as he got older he became ___ more famous. Sometimes he drew a hand in ten different ways ___ he was ready to paint. Many of Leonardo...
He was one of the greatest artists of his day. By the time he was twenty years old, he was called a master painter, and as he got older he became ___ more famous. Sometimes he drew a hand in ten different ways ___ he was ready to paint. Many of Leonardo’s wonderful paintings...
showed E. larger The helicopter is an unusual and useful machine. It can fly straight up in the air and stay in the same place. People wished for such a machine for many years before it was 5 invented.Toy helicopters appeared in France back in the 1700s. A few years later, an ...
But Leonardo wasn’t just an inventor.He was one of the greatest artists of his day.By the time he was twenty years old,he was 7 a master ( 大师) painter,and as he got older he became even more famous.Sometimes he drew a hand ten 8 ways before he was ready to paint.Many of ...