helicopter是什么意思

按要求改写下列句子 1.The helicopter was invented （in 1990）
按要求改写下列句子
1.The helicopter was invented （in 1990）【对括号部分提问】
—— ——the helicopter ——
2.Someone turned down the television just now.（改为被动语态）
The television —— —— down just now by someone.
3.English is spoken as a second language in many countries.
People —— ——as a second language in many countries.
4.The glass is used for keeping water hot. （改为主动语态）
They —— the glass ——keeping water hot.
5.Rice is grown in the south of China. （改为一般疑问句）
—— rice —— in the south of China?
6.We use stamps to send letters. （改为被动语态）
Stamps —— —— —— sending letters.

英语语法 where
The helicopter has now become an extremely useful machine.It excels in military missions,carrying troops,guns and strategic instruments where other aircraft cannot go
为什么这里用where 而不用which啊

The helicopter in the drawing is moving horizontally to the right at a constant velocity.The weight of the helicopter is W=53800N.The lift force L generated by the rotating blade makes an angle of 21.0 degree with respect to the vertical.
(a) What is the magnitude of the lift force?
(b) Determine the magnitude of the air resistance R that opposes the motion
丨 /L
丨 /
丨21度 /
丨 / v
R
丨
丨
丨
W
A cable is lifting a construction worker and a crate,as the drawing shows.The weights of the worker and crate are 965 and 1510 N,respectively.The acceleration of the cable is 0.620m/s^2,upward.What is the tension in the cable.
(a) Below the worker and
(b) Above the worker?
第二题是向上作加速运动

英语翻译
Who designed （设计） the first helicopter （直升飞机）?Who __1__ of the most famous pictures in the world?Who knew more about the human body than most __2__?There is an answer __3__ all these questions --- Leonardo de Vinci （达·芬奇）.
　　Leonardo may have been the greatest genius （天才） __4__ have ever known.He lived in Italy around the year 1500,but many of his inventions seem modern to us today.For example,one of his notebooks has drawings of a helicopter.Of course,he couldn’t __5__ a helicopter with the things he had.But scientists say his idea would have worked.
　　But Leonardo __6__ an inventor.He was one of the greatest artists of his day.By the time he was twenty years old,he was called a master （ 大师） painter,and as he got older he became __7__ more famous.Sometimes he drew a hand ten different ways __8__ he was ready to paint.
　　Many of Leonardo’s wonderful paintings are still with __9__ today.You may know one of his most famous works the __10__ woman known as the Mona Lisa.
　　1.A.took B.made C.painted D.invented
　　2.A.artists B.doctors C.painters D.people
　　3.A.to B.of C.for D.from
　　4.A.the scientists B.the artists C.the world D.people
　　5.A.draw B.paint C.work D.build
　　6.A.was just B.wasn’t just C.wasn’t D.was no longer
　　7.A.less B.no C.even D.very
　　8.A.before B.after C.because D.when
　　9.A.him B.us C.them D.you
　　10.A.interesting B.crying C.smiling D.surprising
答案是CBADDBCABC

The height of a helicopter above the ground is given by h = 2.85t3,where h is in meters and t is in seconds.At t = 1.90 s,the helicopter releases a small mailbag.How long after its release does the mailbag reach the ground?
那个2.85t是立方 就是2.85t的立方

英语语法一问
The nini-helicopter has already been invented by him .
already 为什么放在has后面而不是前面?

Helicopters dropped water on the fire?(划线部分提问)（画的是Helicopter)
That is a map of China.(划线部分提问）（画的是of China)

Who designed the first helicopter(直升机)? Who __1___some of most famous pictures in the world? Who knew more about the human body than most ___2___of his time? There is an answer ___3___ all these questions --Leonardo da Vinci (达•芬奇) Leonard may have been the greatest genius ___4___ have ever known. He lived in Italy around the year 1500, but many of his inventions seem modern to us today. For example, one of his notebooks has drawings of a helicopter. Of course, he couldn’t ____5___ a helicopter with the things he had. But scientists say his idea would have worked. But Leonard ___6___ an inventor. He was one of the greatest artists of his day. By the time he was twenty years old, he was called a master(大师) painter, and as he got older he became ___7__ more famous. Sometimes he drew a hand in ten different ways ____8___he was ready to paint. Many of Leonardo’s wonderful paintings are still with ____9___today. You may know one of his most famous works-- the ___10___ woman known as the Mona Lisa. 小题1: A．took B．made C．painted D．invented 小题2: A．artists B．doctors C．painters D．people 小题3: A．to B．of C．for D．from 小题4: A．the scientists B．the artists C．the world D．people 小题5: A．draw B．paint C．work D．build 小题6: A．was just B．wasn’t just C．wasn’t D．was no longer 小题7: A．less B．no C．even D．very 小题8: A．before B．after C．because D．when 小题9: A．him B．us C．them D．you 小题10: A．interesting B．crying C．smiling D．surprising

it was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash
这里的,before是啥意思啊

I will like to order 6 samples. Does this helicopter fly, what does it actually do?
收到客户邮件回复,要6个样品.但是后面那句话他要问什么问题啊?急,在线等
（产品太阳能小飞机模型玩具）

...完成句子
Who designed the first helicopter(直升机)?Who _____some of most famous pictures in the world?Who knew more about the human body than most ______of his time?There is an answer ______ all these questions --------Leonardo da Vinci (达•芬奇)
Leonard may have been the greatest genius ______ have ever known.He lived in Italy around the year 1500,but many of his inventions seem modern to us today.For example,one of his notebooks has drawings of a helicopter.Of course,he couldn’t _______ a helicopter with the things he had.But scientists say his idea would have worked.
But Leonard ______ an inventor.He was one of the greatest artists of his day.By the time he was twenty years old,he was called a master(大师) 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 are still with _______today.You may know one of his most famous works--------- the ______ woman known as the Mona Lisa.
31.A.took B.made C.painted D.invented
32.A.artists B.doctors C.painters D.people
33.A.to B.of C.for D.from
34.A.the scientists B.the artists C.the world D.people
35.A.draw B.paint C.work D.build
36.A.was just B.wasn’t just C.wasn’t D.was no longer
37.A.less B.no C.even D.very
38.A.before B.after C.because D.when
39.A.him B.us C.them D.you
40.A.interesting B.crying C.smiling D.surprising

英语翻译,求教,太难了!
philippe mathieu, the helicopter pilot who worked with Pascal Maitre on this month’s madagascar story,was a photographer’s dream. “he never said, ‘i can’t do this.’ it was always, ‘let’s try,’ ” pascal told me. philippe knew how photographers think. he understood about waiting hours for a few minutes of perfect light. With philippe’s help, pascal shot aerials of the madagascar landscape and showed, in ways that could never be comprehended from the ground, the scarification of the land caused by mining and logging
其实就三点不太会翻译：
1 “ I can do this" 和” it was always" 怎么翻译?
2 “perfect light" 怎么翻译?
3 最后一句” the scarification of."
开头是人名“Philippe Mathieu,” 这里面有好几处是人名 看的时候多注意点 比如“Pascal shot "

14 pairs were recorded there in helicopter surveys in 1984,but only 6 birds representing at most 3 pairs were recorded 16 years later.3841 后面的representing at most 3 pairs were recorded 怎么翻译

He saw a helicopter fly over and the people inside yelled overa bll horn
saw 后面的fly和 yelled 是过去式吗?
saw后面不是应该是doing或是do的吗

大学英语!
He noticed the helicopter hovering over the field.Then to his astonishment,he saw a rope ladder _______ out and three men climbing down it.
A.throwing B.being thrown C.having thrown D.having been thrown
这道题我做了两次,第一次答案上写的是D 第二次就成了B了
其实我就觉得两个都是可以的 但选择题是要最佳的 我就觉得D是最好的 求指教!

请问各位老师：We took a helicopter tour over the rock.这里的tour在句子中做什么成分?
tour在这里的名性是什么,做什么成份?请教了

谁帮我把这段英文修改下+30分
Go on rescue missions with your helicopter!Through the missions destroying all enemy targets and picking up lost soldiers.
ygq55168 你太搞笑了。

Who designed the first helicopter,Who_the most famous pictures in the world
A took
B made
C painted
D invedted

用正确的动词填空:The man would have been saved if a helicopter_________(be)available.
还有:I would have found the house if he_________(give)me the correct address.
If moking__________(forbid),illnesses will be reduced.
超急!大侠们,拔刀相助一下拉!

(perfect)helicopter money
括号里的词可有可无
1F的答案就是字面意思么,完全按字翻过来的,不行不行啊,这是个经济学词汇,我要的是专业的解释.
2F的可以再详细些么?具体点.

_from the helicopter ,the city looks very beautiful.
seeing
having seen
seen
to see
给出答案理由及翻译

in which 怎么用
after the helicopter in which he was flying to his newly purchased French vineyard crashed into a river 这句话的in which 等于where吗?不懂这个in是跟谁搭配的?

don't charging when the helicopter power switch is in the'' ON ''position什么意思
这是遥控飞机说明书上的,关于充电的,

The man would have been saved if a helicopter ______(be) available.
空格里面的怎么填啊?万分感激啊.

The helicopter soon arrived at the scene of the accident to _______ the survivors. A．organize B．protect C．rescue D．command

dont charging when the helicopter power switch is in the on position什么意思
这是遥控飞机说明书上的,关于充电的,

宾语从句还是地点状语从句?Helicopter flied to where plane crashed happened
Helicopter flied to where plane crashed happened中where后面是不是宾语从句,我以为是地点状语从句,但有人认为是宾语从句,因为to是介词,故有人认为后面跟的是宾语从句.哪个是正确的?告急!

Helicopter field to where the plane crash happened.是什么状语从句
where从句是不是地点状语从句

一句英译汉（高手进!）
The helicopter was and still is a remarkbale bird.