A、<img src="https://learning.mhtall.com/upload/uc_course/10718/CB1A783621C42E9DA4070FA7E86CD35E1677D1DC.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10718/5238E9AC0A4EDBAD86A971533736A510EFD16C4F.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10718/4198338E50F56484479DCB467D7157DD3E00A942.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10718/117EB3595319680C7C33AEB2773DB95F741CB997.png" alt="">
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