A、<img src="https://learning.mhtall.com/upload/uc_course/1843/7ABC1349A9EC7E0B47A3E06AAFC2077B3702EDE9.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/1843/30926ACE869F0809B739A85116C4D24A335164A2.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/1843/55CB3B07D0CD84BE6B3DC55C3516F6BABDD05ECF.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/1843/16DA3AD0C19770C3847ADD6D98419240248FF80F.png" alt="">
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