题型:名词解释 _____ is known to us all is that the 2008 Olympic Games will take place in Beijing.A.ItB.WhatC.AsD.Which 查看答案
题型:名词解释 下列反应与Na2O2+SO2→Na2SO4相比较,Na2O2的作用相同的是A.2Na2O2+2CO2→2Na2CO3+O2B.2Na2O2+2SO3→2Na2SO4+O2C.2Na2O2+H2SO4→Na2SO4+H2O2D.3Na2O2+Cr2O3→2Na2CrO4+Na2O 查看答案