关于胰液的描述,错误的是
B
暂无解析
设数列收敛,则()
Theteamplayedhardbecausethechampionshipofthestatewas______.
设y=y(x)是由方程所确定的隐函数,则 .=
Hegavetheorderthatnothing_____untilthepolicearrived.
设数列{an}的前n项和为Sn,则{an}等差。
(1)Sn4=n2+2n,n=1,2,3
(2)Sn4=n2+2n+1,n=1,2,3