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
40
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://www.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
[originaltext]InApril,theManhattanInstitutereleaseditsyearlystudyo
AlbertEinsteinisaman______materialthingsmeannothing.A、forwhomB、towho
ThoughhewasbornandraisedinAmerica,hecanspeak______Chinese.A、smoothB、f
SuggestionsforImprovingReadingSpeedImprovemento
1983年,高等教育学正式作为教育学科的()学科被国务院学位委员会列入学科专业
蛋白质的基本单位是()A.分子量 B.氨基酸 C.纸质酸 D.有机磷酸
较大的子宫肌壁间肌瘤合并妊娠,出现发热伴腹痛,检查肌瘤迅速增大,应考虑为肌瘤发生
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
微分方程y''=(y')2的通解是: A.lnx+cB.ln(x+c)
监理人对施工分包合同的管理内容有( )。(新教材删除该知识点,题目仅供参考)A.
最新回复
(
0
)