若{an}是等差数列,则有下列关系确定的数列{bn}也一定是等差数列的是( ) 发布时间:2017-04-28 18:08 │ 来源:www.tikuol.com 题型:选择题 问题: 若{an}是等差数列,则有下列关系确定的数列{bn}也一定是等差数列的是( )A.bn=an2B.bn=an+n2C.bn=an+an+1D.bn=nan
题型:选择题 The young man acted strangely during the interview.He made a bad________on the employer.[ ]A.impression B.expressionC.experience D.opinion 查看答案