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
23
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、The density of the water droplets in the air.
B、The size of the water droplets.
C、The temperature of the water droplets.
D、The purity of the water vapor.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3488089.html
相关试题推荐
[originaltext]Whydopeoplesmoke?Onereasonisthatpeoplebecomeadd
[originaltext]Whydopeoplesmoke?Onereasonisthatpeoplebecomeadd
[originaltext]W:Hi,LiHua.Whatareyoudoingthissemester?M:Oh,I’mstill
[originaltext]W:Hi,LiHua.Whatareyoudoingthissemester?M:Oh,I’mstill
[originaltext]W:John,haveyouchosenaphysicaleducationclassyetforthis
[originaltext]W:John,haveyouchosenaphysicaleducationclassyetforthis
[originaltext]W:Haveyouheardabouttheplanecrashyesterday?Itcausedahu
[originaltext]W:Haveyouheardabouttheplanecrashyesterday?Itcausedahu
[originaltext]W:Haveyouheardabouttheplanecrashyesterday?Itcausedahu
[originaltext]W:Haveyouheardabouttheplanecrashyesterday?Itcausedahu
随机试题
Oneofthemorediscernibletrendsinthefinancial-serviceindustryinre
我国24万成人数据汇总分析表明,()者患高血压的危险是体重正常者的3~4倍。A.
固相膜免疫测定中最常用的膜是A.醋酸纤维素膜B.硝酸纤维素膜C.玻璃纤维素膜D.
A.准确度B.阳性预检值C.阴性预检值D.阳性似然比E.阴性似然比假阴性率和真阴
某丙类液体固定顶储罐,储罐容积为200m3,直径为20m。采用水喷雾灭火系统进行
心理测评是对求职者的心理素质和能力的测试。通过心理测评能够判断出求职者心理素质和
新郎经过紧张筹备准备迎娶新娘。婚礼当天迎亲车队到达时,新娘却已飞往国外,由其家人
大青叶除能清热解毒,凉血消斑外,还能A.清热生津 B.利咽消肿 C.祛痰利咽
使用正版软件是防范计算机病毒的有效措施。()
关于项目决策原则的说法,正确的有()。A.采用数据要可靠 B.债权人要发
最新回复
(
0
)