A、<img src="https://learning.mhtall.com/upload/uc_course/10718/C1A810BCBB58B9B5A26BBF2D54D7AE8819294B09.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10718/E395E4327F49A917A3CE2D4FB395C04231DEB69E.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10718/21315863838D436D371F1C68159F33D2EB299DDF.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10718/628F127A32B2A8D5483990A95180D45C47961C5E.png" alt="">
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