已知abc≠0,且
=
=
=k,则k的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca69890d870ac9a79fe891ff57396e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd950ec83d93596468e3aff0bb91e0e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85507be775c8400db1d1562d3565df07.png)
A.2 | B.1 | C.2或﹣1 | D.2或1 |
更新时间:2021-10-19 10:47:21
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A.2 | B.1 | C.2或﹣1 | D.2或1 |