A、<img src="https://learning.mhtall.com/upload/uc_course/10718/3C509D1654BD2514D913ED627C83BCAC0C7AC3E5.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10718/5DAE08B3E00E39BD086555826E5BDC8C54D5ED68.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10718/6F391769ED0A0500A124C026AA837BDDBC70A971.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10718/C6267541C7AFD6388164C5EFD931F5692F7FCDB9.png" alt="">
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