A、<img src="https://learning.mhtall.com/upload/uc_course/10023/40D7D96AA0E5F16116E2BD8179B9A2E2A37DEBB8.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/B9B2FA948DD05B19B3ED22CD334A326A9854FD7D.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/A88118F2DDF98BC02C4624485FD14A8A9678A632.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/AB774E9DAB84F2ABDED7A1CB8502B73E7B25E986.png" alt="">
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