A、<img src="https://learning.mhtall.com/upload/uc_course/10023/0A1227CF92B458D179DFF9E81FD15D2EBCDC7F87.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/C34C1C1A29DE4BDB889DBDCC50C210A811E17B5A.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/87E20448C7D0B600EFA8B5FC708DB9836D004CBE.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/EA9BD081F26A5B81F9C89F5AF394FBCD4D0B113F.png" alt="">