A.(2n-1)2 | B.
| C.4n-1 | D.
|
1-qn |
1-q |
1 |
3 |
1 |
8 |
A.2-
| B.2-
| C.2-
| D.2-
|
an |
an+1 |
2 |
A.2n-2 | B.2n+1-2 | C.2
| D.2
|
A.1.14 | B.1.15 | C.10×(1.16-1) | D.11×(1.15-1) |
A.任一项均不为零 |
B.必有一项为零 |
C.至多一项为零 |
D.任一项不为零或有无穷多项为零 |
A.3:1 | B.9:1 | C.10:1 | D.5:1 |
© 2017-2019 超级试练试题库,All Rights Reserved.