A、<img src="https://learning.mhtall.com/upload/uc_course/10023/1367DA495662FABACE83C3245358122CD8452603.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/7223AC0C7982C34EBE1BCD89A853D96BBD3F73B8.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/E5DAFC50E783FB6CD84B80A3F2F5DAF9189E7610.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/5EE62AE56881F79CAA9119B89D042221D967BB13.png" alt="">
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