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
Imagine being able to print rocket engine parts, chocolate figurines, designer sunglasses, or even pizzas—just with pressing a
Imagine being able to print rocket engine parts, chocolate figurines, designer sunglasses, or even pizzas—just with pressing a
admin
2021-12-31
49
问题
Imagine being able to print rocket engine parts, chocolate figurines, designer sunglasses,
or even pizzas—just with pressing a single button. It may sound like something out of【M1】________
science fiction, but it’ s increasing becoming a reality. Thanks to 3-D printing, 【M2】________
companies are reimaging their long-term business plans.
Invented in mid-1980s, 3-D printers create solid, three-dimensional objects【M3】________
from various materials such as plastic, wax, wood, gold, or titanium. A major advantage of
3-D printing is that designs for objects can be easily changed. When designs were changed in traditional【M4】________
manufacturing, the machinery that make the objects needs to be redesigned or upgraded, 【M5】________
which can be very cost. But in the case of 3-D printers, only the software needs to be modified.【M6】________
3-D printing is also better than traditional manufacturing because there is no wasted【M7】________
material. With traditional manufacturing, some material is cut away from to create an object, 【M8】________
but 3-D printing uses only which is necessary. Guided by software, a 3-D printer builds【M9】________
an object one layer at a time, place material only where it needs to be. As a result, 【M10】________
it can make complex objects less expensively.
【M4】
选项
答案
Were→are
解析
该句的意思是“当传统制造中的设计发生变化时,制造物体的机器需要重新设计或升级,这可能非常昂贵”。根据整篇短文的时态可知,此处时态应该用一般现在时,因此需将were改为are。
转载请注明原文地址:https://kaotiyun.com/show/jbVK777K
本试题收录于:
D类竞赛(专科)题库大学生英语竞赛(NECCS)分类
0
D类竞赛(专科)
大学生英语竞赛(NECCS)
相关试题推荐
EuropeancountrieshavebeencarefullywatchingtheviolencethatexplodedacrossFrance,worriedthattheirvehiclesandbuildi
PassageOneWhatdidtheprofessoradvicethestudentstodobygivingthelecture?
(1)Nowthatit’ssummer,thegenerationgapintheofficeisasobviousasthealmost-barefeetflip-floppingdownthehallway.
PassageFourAccordingtoProfessorCappuccio,whatmakesmodernpeoplesacrificetheirsleepingtime?
Manygenerationsago,theIroquoispeoplelivedinastateofperpetualwarthroughouttheirhomelandsinwhatisnowNewYorkS
(1)Menandwomenapproachproblemswithsimilargoalsbutwithdifferentconsiderations.Whilemenandwomencansolveproblems
(1)NearusonourstreettherewasafamilywithagirlmyagecalledSafinaandtwoboyssimilarinagetomybrothers,Babar
You’dimaginethataskingpeopletoratethemselvesonatenpointscaleinresponsetothequestion"Ingeneral,howhappyoru
随机试题
甲为一有限责任公司的小股东,不参与公司经营管理。根据公司法规定,下列文件中,甲有权查阅和复制的有()。 Ⅰ.股东会会议记录Ⅱ.财务会计报告 Ⅲ.公司章程
某地拟建一公路,全长120km,项目沿线经过5个镇的10个村、2个工业区。所选路线跨越一级水源保护区、风景旅游区和一个自然保护区,跨过两条河流和两座山,周边还包括超高压变电站。沿线某些路段现有道路,将道路进行拓宽,标准路幅宽75m,主道双向八车道
出现实际利率为负而致使收益下降甚至本金受损的风险属于()。
在竞争的条件下,个体倾向于把他人的成功外归因,这是一种()。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:()
纪录片
下列关于管理信息系统(MIS)和决策支持系统(DSS)的叙述中,哪一个是不正确的?()
下面关于USB的叙述中,错误的是()。
若有以下的说明和语句:intt[3][3],*pt[3],k;for(k=0;k<3;k++)pt[k]=&t[k][0];则在执行for语句后,*(*(pt+1)+2)表示的数组元素是______。
以下各项中,可以将变量A、B值互换的是()。
最新回复
(
0
)