⑧ PECVD 是指什么？ A: Plasma Enhanced Chmical Vapor Deposition B: Plastic Enhanced Chmical Vapor Deposition C: Pan Enhanced Chmical Vapor Deposition D: Plaster Enhanced Chmical Vapor Deposition

Water vapor __________ on a window pane produces condensation.

Water, _____ enough, can change into vapor quickly

Most of the water vapor in the atmosphere is contained in which layer of the atmosphere A: Troposphere B: Tropopause C: Stratosphere

原文:Gasoline is a fuel whose vapor is readily explosive..译文:汽油是一种燃料,其油气 。

What is CV standing for? A: Curriculum Vitae B: Current Voltage C: Chemical Vapor D: Concurrent Version

The ingredient of atmosphere does NOT include ______. A: carbon dioxide B: dust particles C: water vapor D: sunlight

About drunk driving, a smart car can not________. A: pick up the vapor B: refuse to start the engine C: arrest the driver

中国大学MOOC: However, this kind of energy will (7) ________ plenty of greenhouse gases, such as carbon dioxide, methane, (8) ________ vapor and so on.

Which of these anthropogenic greenhouse gases is the biggest contributor to net radiative warming? A: Methane B: Nitrous oxide C: Water vapor D: Carbon dioxide