A、<img src="https://learning.mhtall.com/upload/uc_course/10718/410112893FD47A4F05CA9C8FC4EA937BB886C335.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10718/C271897BD8CBCAA03B74C8BC8C0F2341A3394619.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10718/2B99C66AD336ECC0622E9BE758FDCA19FAA641D8.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10718/DF4C4A2849E88C07B715568B76EBF6EDA221AFC0.png" alt="">
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