随机变量X的概率分布Y表示X被3除的余数，则E(Y)=______.
Weaimtoensurethatallcandidatesaretreatedfairlyandthattheyhaveequal______toemploymentopportunities．
Thedestructionofthetwintowers_________shockandangerthroughouttheworld．
则下列结论正确的是（）
Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.
