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据调查显示，全世界范围内13岁到15岁的年轻人中有78％的人称经常接触某种形式的烟草广告、促销、赞助等；大约三分之一的年轻人因为接触烟草广告、促销和赞助而开始尝试吸烟。因此，某官员说：“禁止烟草广告、促销和赞助是避免年轻人吸烟以及减少烟草消费的最有效途径之一。” 下列哪项最能有效支持官员的说...
We are given the following data: Patm=760mmHg Height of mercury in the manometer,h=55mm Th... Learn more about this topic: Atmospheric Pressure | Overview, Formula & Units from Chapter 5/ Lesson 9 15K What is atmospheric p...
Helium | Definition, Properties & Uses from Chapter 28 / Lesson 21 22K What is helium used for? Learn about chemical element helium and its uses. Understand the chemical symbol for helium, its origin name, and find out whether helium gas is a pure substance or not. Related...
Where is this slang used? Link to this slang definition To link to this term in a web page or blog, insert the following. IDGAS To link to this term in a wiki such as Wikipedia, insert the following. [http://onlineslangdictionary.com/meaning-definition-of/idgas IDGAS] Some wikis...
Definition of Gas Pressure When the molecules of a gas bounce off the walls of their container, they exert a force. Gas pressure is defined as the force per unit area produced by the gas. Depending on the purpose of the measurement, different units are commonly used. In the English system...
Learn the definition of exosphere as well as how high it is and what can be found there. Study the exosphere's temperature, composition, and function. Related to this Question What is in the exosphere? What is the exosphere? What is the temperature in the exosphere?
Merriam-Webster’s top definition for gaslighting is the psychological manipulation of a person, usually over an extended period of time, that “causes the victim to question the validity of their own thoughts, perception of...
The definition of a greenhouse gas is at the same time very simple and very complicated for the ordinary man (or woman !) : such a gaz is “just” a gas mixed in the atmosphere thatabsorbs the infrared radiation emitted by the earth’s surface. We are not accustomed to these gases bec...
Looking for online definition of GAS or what GAS stands for? GAS is listed in the World's most authoritative dictionary of abbreviations and acronyms