A.-σB.(1+μ)qC.-(1+μ)qD.-μq
![](https://assets.51tk.com/images/e9c43b878c3d5a8c_img/c4d2ef5b0d1a341c.jpg)
A.-σ
B.(1+μ)q
C.-(1+μ)q
D.-μq
B.(1+μ)q
C.-(1+μ)q
D.-μq
参考解析
解析:
![](https://cdn.niusouti.com/images/e9c43b878c3d5a8c_img/87ac47c4a8917215.jpg)
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