1 . 小王在word文档中设计好一张A4规格的表格,根据要求,这种规格的表格需要设计1000张,小王欲使用“复制—粘贴”(用鼠标选中表格,右键点击“复制”,然后在本word文档中“粘贴”)的办法满足要求.请问:小王需要使用“复制—粘贴”的次数至少为( )
A.9次 | B.10次 | C.11次 | D.12次 |
您最近一年使用:0次
2 . 已知一双曲线的两条渐近线方程为
和
,则它的离心率是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b386e2c5d9ad7cec404ce5c40dbebe42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc261508f42e75323971f0b8282b0ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知等差数列
及
.设An=a1+a2+
+an,Bn=b1+b2+
+bn,若对
,有
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b468786c8644db94f4aa5b781478f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daca83a7d5dd024f1b7338df1377bf48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a67649ce7b7b3f072c6810fb0108065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b468786c8644db94f4aa5b781478f3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次