3、yafewstudentsstudyingatnight.Wecanfindtheever-burninglampseverywhere.Thoseconsciousandunconsciouswasteleadtothesquanderingnationalresources,meanwhile,itbringscollegesatremendousburden.ThispassagedisplaysanefficientenergycontrolmethodbasedontheprinciplesofSCM indoor lighting con