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
2023-07-22
45
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/2858269.html
相关试题推荐
[originaltext]Whenyouhaveadogitisnecessarytocareforitverycaref
[originaltext]M:Hi,Susan.Wherewereyouatlunchtime?Iwassavingaseatf
[originaltext]M:Hello,Jane.W:Hi,Peter.Howareyou?It’sbeenalongtime
[originaltext]M:Hello,Jane.W:Hi,Peter.Howareyou?It’sbeenalongtime
[originaltext]W:Youknow,thenoiseinmydormhasreallygottenoutofcontro
[originaltext]W:Youknow,thenoiseinmydormhasreallygottenoutofcontro
[originaltext]W:Youknow,thenoiseinmydormhasreallygottenoutofcontro
[originaltext]The"Americandream"isanideathatgrewfromTVprograms,b
[originaltext]The"Americandream"isanideathatgrewfromTVprograms,b
[originaltext]The"Americandream"isanideathatgrewfromTVprograms,b
随机试题
HarrygotthecoldshoulderwhenheaskedtohaveadatewithMary.A、当哈利请玛丽和他约会时
DearCarl,MariaandRobert,Iamverypleasedtoannouncethatyourproject
OfficeSpaceAroundtheturnofthecentur
[originaltext]M:Let’scomebacktoyourwork.Arethereanyunpleasantaspects
处方中的药品名称A.不得使用经国家批准的专利药品名 B.可以使用医疗机构自行编
项目现金流量分析中,不能作为现金流出的项目是()A:折旧费支出B:无形资产摊销
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
下列房地产市场调研报告的内容中,不需要在报告摘要中出现的是()。A.调研目的和调
由单一电源侧用断路器操作中性点不接地的变压器出现非全相或熔断器非全相熔断时,如变
最新回复
(
0
)