RC串并联正弦波振荡电路的振荡频率为( )<br>·<img src="/lqwvjeImg/50/504d451e044327644c4c1011c168d15b.png" <br>·<img src="/lqwvjeImg/55/558ffb0b7bb8441bdbe85ca910ec4960.png" <br>·<img src="/lqwvjeImg/b4/b4d210d65c1e4e595cc14438327cebb9.png" <br>·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1551347104903bbdc5af1e0cb40e78327b3a7bb7f6c20image11.png"

RC串并联正弦波振荡电路的振荡频率为( )
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·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1551347104903bbdc5af1e0cb40e78327b3a7bb7f6c20image11.png"

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