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.