设计阶段应达到的目标有()。
AD
暂无解析
随机变量X的概率分布Y表示X被3除的余数，则E(Y)=______.
Theoppositionleaders________thegovernmentfornottakingactionsooner.
Weregretto________thatitmaynotbepossibletodealwitheveryrequest.
行列式
Insomeschoolschildrenwhoprefertoreadbooksratherthan________footballbecomesocialoutcasts(被抛弃者).