ultraviolet light
举一反三
- ______ light causes the skin to become darker in the sun. A: Capitalism B: Imperialism C: Pastry D: Ultraviolet
- Which<br/>kind of physical hazard causes the welding flash? () A: Light B: Ionizing radiation C: Ultraviolet radiation D: Vibration
- The accumulation of greenhouse gases (GHGs) causes global warming by letting sunlight into the atmosphere as _______. Then, when the earth re-radiates the heat back to space, the gases trap the energy in the form of outgoing ______. A: visible light, ultraviolet radiation B: infrared radiation, ultraviolet radiation C: ultraviolet radiation, infrared radiation D: infrared radiation, radio waves
- Which of the following methods cannot inactivate HIV? A: 75% ethanol B: Ultraviolet light C: Iodine tincture D: Sodium hypochlorite E: Heating under 100℃ for 20 minutes
- 以下哪种电磁波(辐射)是所有物体都可以发射的。( ) A: 红外线(Infrared, IR) B: 可见光(Visible Light) C: 紫外线(Ultraviolet) D: X射线(X-Rays)