首页
登录
职称英语
[originaltext] You may not realize that fog is simply a cloud that touches t
[originaltext] You may not realize that fog is simply a cloud that touches t
游客
2024-02-27
64
管理
问题
You may not realize that fog is simply a cloud that touches the ground. Like any cloud, it is composed of tiny droplets of water, or, in rare cases, of icy crystals that form an ice fog. lce fogs usually occur only in extremely cold climates, because water droplets are so tiny they don’t solidify until the air temperature is far below freezing, generally thirty degrees below zero Celsius or lower. These droplets are nearly spherical. The transparency of fog depends mainly on the concentration of droplets. The more droplets, the denser the fog is. Since water is eight hundred times denser than air, investigators were puzzled for a long time as to why the water particles in fog didn’t simply fall to the ground, making the fog disappear. It turns out that droplets do fall at a predictable rate but in fog-creating conditions, they are either supported by rising air currents or continually replaced by new droplets condensing from water vapor in the air.
选项
A、Why fog freezes at low temperatures.
B、How very small droplets can form.
C、Why the density of fog varies.
D、How water droplets stay suspended in air.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3488090.html
相关试题推荐
[originaltext]IfIhadtonameasinglegreatinventionofmankind,Iwould
[originaltext]IfIhadtonameasinglegreatinventionofmankind,Iwould
[originaltext]M:Ican’tbelieveyou’restilldrivingaroundinthispieceofj
[originaltext]W:MayIhelpyou?M:Yes,mywifeandIwanttotakeavacation
[originaltext]W:MayIhelpyou?M:Yes,mywifeandIwanttotakeavacation
[originaltext]WashingtonIrvingwasAmerica’sfirstmanofletterstobekn
[originaltext]WashingtonIrvingwasAmerica’sfirstmanofletterstobekn
[originaltext]Menusuallythinkthecartoonisfunny.Womendonot.Andthe
[originaltext]Man:WhendidyoulastgotoLondon?Woman:Oh,Idon’tknowreal
[originaltext]Man:WhendidyoulastgotoLondon?Woman:Oh,Idon’tknowreal
随机试题
Mr.Smithaskedhissecretaryto______anewparagraphintheannualreportshew
Behavioralpsychologistsapprehendthatconditionedfearresponsesto
[originaltext]CorntonValeisanewprisonspeciallydesignedforwomenin
Themanagerurgedthathisstaff__________(不要错过这个机会).(should)notdrop/missthe
思科路由器的内存体系由多种存储设备组成,其中用来存放IOS引导程序的是(本题
药物不良反应不包括A.过度反应 B.停药反应 C.变态反应 D.治疗作用
共用题干 张某、方某共同出资,分别设立甲公司和丙公司。2013年3月1日,甲公
汽车客运站的业务工作集中体现在为旅客和车主(参营者)服务,以及相关的()工作。
下列选项属于工资薪金的有()。A.基本工资 B.独生子女补贴 C.奖金
(2017年真题)根据《标准施工合同》,当投标函、合同协议书和通用合同条款出现含
最新回复
(
0
)