The difference between a liquid and a gas is obvious (1)___ the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and (2)___it to the level of a free surface. A gas forms no free surface but (3)___to ...
A. evaporation B. condensation C. sublimation D. deposition 相关知识点: 试题来源: 解析 A。解析:“evaporation”是蒸发,液体变为气体的过程叫蒸发;“condensation”是冷凝,气体变为液体;“sublimation”是升华,固体变为气体;“deposition”是沉积,气体变为固体。反馈 收藏 ...
In contrast, the vapor above the liquid surface becomes denser as the evaporated molecules are added to it. The combination of temperature and press at which the densities become equal is called the critical point. Above the critical point the liquid and the gas can no longer be distinguished;...
<p>To explain how a gas can be changed into a liquid and a liquid into a gas while maintaining a single phase, we can break down the process into several steps:</p><p><strong>Step 1: Understanding Phases</strong> - <strong>Definition of Phases</strong>:
A gas has less (())(())(()) than a liquid.A balloon full of air has less (())(())(()) than a balloon full of water. 相关知识点: 试题来源: 解析 1. density 2. density 气体密度比液体密度小,因此第一个空格应填入“density”。同样,充满空气的气球密度比充满水的氣球密度小,...
A. evaporation B. condensation C. sublimation D. precipitation 相关知识点: 试题来源: 解析 A。本题考查科学术语。evaporation 是“蒸发”,即从液体变为气体的过程;condensation 是“凝结”,从气体变为液体;sublimation 是“升华”,从固体直接变为气体;precipitation 是“降水”。反馈 收藏 ...
试题来源: 解析 A。本题考查科学概念的英文表述。“evaporation”意思是蒸发,液体变为气体的过程就是蒸发。B 选项“condensation”是凝结,是气体变为液体的过程。C 选项“precipitation”是降水。D 选项“sublimation”是升华,是固体直接变为气体的过程。反馈 收藏 ...
The difference between a liquid and a gas is obvious under the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and fill it to the level of a free surface. A gas forms no free surface but tends to diffuse(...
试题来源: 解析 A。解析:蒸发(evaporation)是水从液态变为气态的过程,这符合题目描述。选项B,condensation是气态变为液态的凝结过程,与题目要求不符。选项C,precipitation是降水过程,包括雨、雪等形式,不是液态到气态的转变。选项D,infiltration是入渗过程,指水渗入土壤等,和液态到气态的转变无关。
液体还是固体，在温度上升的时候都会膨胀。这里面的“无论”只有用no matter表达才最合适。whatever是“无论什么东西”，是代词，要做主宾表成分的。在本句中它没有这样的机会哦。it是主语，液体气体固体是表语，从语法角度讲就不可以选择它。综上，从句义和语法两方面都不能选择whatever。供参考。