首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It is made of iron. B、It is made of steel. C、It is made of plastic. D、It is made of paperboard. C
A、It is made of iron. B、It is made of steel. C、It is made of plastic. D、It is made of paperboard. C
admin
2021-06-15
23
问题
Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. (3)But they can also be deadly to birds and bats. The turbines’ large blades turn quickly in the sky. Birds and bats sometimes fly into them and are killed.
But a new type of wind generator may offer an answer to that problem. Mr. Yanez and his friend Raoul Martin built a small wind tunnel to experiment on their own. They built a large working model of the generator in a field near their workspace. They called the equipment Vortex. Mr. Yanez described how the Vortex generator works. It does not spin around. So it creates no risk to birds and bats. (4) It is made mostly of plastic and has very few moving parts. The generator also does not create noise.
3. Why are wind turbines deadly to birds and bats?
4. What is the Vortex generator made of?
选项
A、It is made of iron.
B、It is made of steel.
C、It is made of plastic.
D、It is made of paperboard.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/MIK7777K
0
大学英语四级
相关试题推荐
AfederaljudgeinCaliforniahasdismissedalawsuitagainsttheCoca-ColacompanywhicharguedthatDietCokemisledpeopleto
LamarOdom,thestarforwardintheNBA,isknownforhisoutsizedloveofcandy,sometimeseating【C1】______bagsofchocolatean
A、France.B、Brazil.C、England.D、Canada.B
Almost150yearsafterphotovoltaic(光电的)cellsandwindturbines(涡轮机)wereinvented,theystillgenerateonly7%oftheworld’
A、Watchingtelevisionforhours.B、Playingvideogames.C、Readingbooksandmagazines.D、SurfingtheInternet.A细节辨认题。短文中提到,研究小组
A、Tochargeasmallfeeonplasticproductsinsupermarkets.B、Tobansingle-useplasticbagsandstrawsonBaliIsland.C、Topr
A、Atruckplungedintoapoolofliquidchocolate.B、Theheavysnowmadedrivingverydifficult.C、Thetruckdriverdozedoffwh
A、BrentwoodinAmerica.B、London.C、EssexinEngland.D、Scotland.C
A、Thebirdwasdead.B、Thebirdwasalive.C、It’shardtoanswerthequestion.D、Hefoundoutthechildren’strick.D
A、Itscoredahattrick.B、ItsetnoWorldCuprecords.C、ItwasdefeatedbyBrazil.D、Itscoredtwogoals.D
随机试题
Wehavenoideaastowhenmenbegantousesalt,butwedoknowthatithasbeenusedmmanydifferentwaysthroughoutthehist
由太阳辐射及人体与周围环境物体之间通过辐射形式的热交换组成的是()
计算工程监理费采取按建设工程投资的百分比计算法的关键是( )。
社会主义核心价值体系是建设和谐文化的根本,它的基本内容包括()。
有位女士的宠物狗丢失了,动用7辆豪车在公路上寻狗,对于豪车寻狗你是怎么看的?
指出上网可选的两种接入技术,并比较其优缺点。若采用电视铜缆接入计算机主干网络,用户端需增添什么设备?网络通信速率为多少?
A、 B、 C、 D、 A
Whenonelooksbackthefifteenhundredyearsthatarethelifespanof1,______theEnglishlanguage,heshouldbeabletonoti
Ididn’tseeherinthemeeting-roomthisafternoon.She______atthemeeting.
Idecidednotto______Johnwhenhewasinsuchadesperateposition.
最新回复
(
0
)