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函数的间断点是( )。(本题5.0分)

单选题
2021-07-17 22:53
A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528274920149ba0895fbf9a247519fe9e7366fc179e2image28.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152827492022627e79789322c44a193c13f81f9040bb5image29.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528274920297e90e8c5d72b241ada56fc64966defb86image30.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152827492037140c86d4a947e4da4870de83cd6d315c7image31.png">
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正确答案
A

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