首页
登录
职称英语
[originaltext] Can you imagine ice that does not melt and is not wet? Have y
[originaltext] Can you imagine ice that does not melt and is not wet? Have y
游客
2024-02-23
29
管理
问题
Can you imagine ice that does not melt and is not wet? Have your ever heard of dry ice? Dry ice is made by freezing a gas. It is quite different from ordinary ice which is simply frozen water. Dry ice was first manufactured in 1925. It has since fulfilled the hope of its invent or. It can be used for making artificial fog in the movies. When steam is passed over dry ice, a very dense vapor rises. It can also be used for destroying insects in grain supplies. It is more practical than ordinary ice because it takes up less space and it is 142 degrees colder. Since it turns into steam, instead of melting into water, it is cleaner to use. For these reasons, it is extremely popular and many people prefer it to ordinary ice. Dry ice is so cold that if you touch it with your bare fingers, it will burn you.
选项
A、In the 1920’ s.
B、In the 1930’ s.
C、In the 1940’ s.
D、In the 1950’ s.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3474533.html
相关试题推荐
Whatistheman’sproblem?[br][originaltext]W:Oh,Steve,you’reearly!I’mhapp
Whatistheman’sproblem?[originaltext]W:Oh,Steve,you’reearly!I’mhappyyou’
[originaltext]W:Mr.Watson,Iwonderwhetherit’spossibleformetotakeavac
[originaltext]W:Mr.Watson,Iwonderwhetherit’spossibleformetotakeavac
[originaltext]W:Mr.Watson,Iwonderwhetherit’spossibleformetotakeavac
Whatdoesthespeakersayabouttelevisionsignals?[br][originaltext]CAT
Whatdoesthespeakersayabouttelevisionsignals?[br][originaltext]CAT
Whatdoesthespeakersayabouttelevisionsignals?[originaltext]CATVisa
Wheredoestheconversationmostprobablytakeplace?[br][originaltext]M:Iri
Wheredoestheconversationmostprobablytakeplace?[br][originaltext]M:Iri
随机试题
NosoonerhadIclosedthedoorthansomebodystartedknocking________it.A、on
【B1】[br]【B18】A、actuponB、actagainstC、adherebyD、abidetoAactupon表示“对……起作
WatchingMoviesinEnglishI.OnegreatadvantageofEng
[originaltext]DanielHaleWilliamswasanexampleofabrilliantAfrican-Am
(一)资料 2014年4月,某审计组对丙公司2013年度财务收支情况进行了审计
旅游者的以下( )行为被纳入“旅游不文明行为记录”。A.参与赌博、色情、涉毒活
假如某国出现比较严重的经济衰退,该国当局却不能运用货币政策进行调节。这个国家可能
(2019年真题)目前基金注册程序分为简易程序和普通程序。以下适用简易程序的有(
2、无论高压设备是否带电,作业人员不得单独移开或越过遮栏进行工作;若有必要移开遮
关于金融市场的说法,正确的有()。A.金融市场以货币资金为交易对象 B.金融
最新回复
(
0
)