下列积分中,积分值不为零的是( )<br>·<img src="/lqwvjeImg/32/32d401bb1787c15941efdebb54e5d13b.png" ,其中C为正向圆周|z-1|=2<br>·<img src="/lqwvjeImg/a7/a7804c30d8ef1a0cba4d3a9f309306b4.png" ,其中C为正向圆周|z|=5<br>·<img src="/lqwvjeImg/e4/e41baf5bac2cee35edd3f3fdacbfe6d0.png" ,其中C为正向圆周|z|=1<br>·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/uploadFile/photo/1698996395194_eb952cb814b4459891f5613ceea28bb6.png" ,其中C为正向圆周|z|=2<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/169899560756612b4f537a4ac4e7f8e4b323862d4de1bimage101.png"

下列积分中,积分值不为零的是( )
·

·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/uploadFile/photo/1698996395194_eb952cb814b4459891f5613ceea28bb6.png" ,其中C为正向圆周|z|=2<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/169899560756612b4f537a4ac4e7f8e4b323862d4de1bimage101.png"

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