A、<img src="https://learning.mhtall.com/upload/uc_course/10023/5899AA3E4E06C7C435A20E048E952F375CAA0DE2.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/5CCBF688F638F73D1B5C4FAF34ECD7BA1FAD13C4.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/B0C6B5E5E04233B74CC4534291AD92675F593874.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/EF140A12EE0816B82F7126AF840B2F4C23323336.png" alt="">