以下()的方差一定等于均数
A.χ2分布
B.二项分布
C.Poisson分布
D.标准正态分布
E.正态分布
参考答案:C
. Not only should you get used ______ under difficult conditions but you also you pay more attention ______ your work well.
A.to work, to do
B.to working, to doing
C.to work, to doing
D.to working, to do
平常所说的微型机“内存条”是指______存储器。