A.
B.
C.
D.
[单选题]方差σ2/x有:()。A.B.C.D.
[单选题]方差σ2/x有:()。A.B.C.D.
[单选题]有如下程序:执行上面程序的输出是( )。A.1122B.2112C.2213D.2223
[单选题]A.20B.22C.24D.28E.30
[单选题]A.16256B.-16256C.16384D.8128E.-8128
[单选题]A.20B.22C.24D.28E.30
[单选题]A.16256B.-16256C.16384D.8128E.-8128
[单选题]A.嵴B.窝C.沟D.点隙E.舌面隆凸