A、<img src="https://learning.mhtall.com/upload/uc_course/10023/9D1562C1481C38A42874C332C917F6B7EC2F40C9.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/D49011FD54E43899DF59FA045AA26A17F0D8ABC3.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/CB0593CAFB0E18A2C4B2F49CD2BCB996C6166841.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/3EF2B64CD940946381A1F23E18E703CD0405E66B.png" alt="">
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