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
47
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、By passing steam over dry ice.
B、By turning ordinary ice into steam.
C、By heating dry ice.
D、By mixing dry ice with ordinary ice.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2858267.html
相关试题推荐
[originaltext]JohnLennon,oneoftheBeatles,wasmurderedjustbefore11
[originaltext]JohnLennon,oneoftheBeatles,wasmurderedjustbefore11
[originaltext]M:Hello,UniversityBooks.TimWeberspeaking.W:Hi,Tim,this
[originaltext]M:Hello,UniversityBooks.TimWeberspeaking.W:Hi,Tim,this
[originaltext]M:Hello,UniversityBooks.TimWeberspeaking.W:Hi,Tim,this
[originaltext]W:Didyouvisitthetelevisiontowerwhenyouhadyourvacation
[originaltext]Hi.MynameisJohnHilton.I’myourteachingassistantforC
[originaltext]Hi.MynameisJohnHilton.I’myourteachingassistantforC
[originaltext]M:Ow!Thathurts!W:Whathappened?Didyoucutyourself?M:Y
[originaltext]M:Ow!Thathurts!W:Whathappened?Didyoucutyourself?M:Y
随机试题
FormostofAmericanhistory,businesseswereruntoprovidelivelihoodsan
[originaltext]W:I’vebeenmeaningtogetmyeyeschecked.Ijusthaven’tgotte
"LostCity"ExploredUsingHigh-SpeedNetworksUnderseaexplora
[originaltext]Italyenjoyedahighlydevelopedandspecializedcivilization
[originaltext]W:Tom,doyouhaveaminute?M:Oh,hi,Cathy,sure.Anything?W
A.假性近视 B.屈光指数性近视 C.曲率性近视 D.单纯性近视 E.轴
患者男,57岁。因发现血糖升高5年,波动2天,收住入院。护士对其进行入院健康教育
通过准备问题、面向全体学生交流、对过程及时总结是( )运用时应注意的事项。A.
下列各类数据中,可以进行乘除运算的是( )。A.等距数据 B.顺序数据 C
个人投资者从基金分配取得的下列收入中,需要由基金管理企业代扣代缴个人所得税的是(
最新回复
(
0
)