A、<img src="https://learning.mhtall.com/upload/uc_course/10718/66E934E54F93B2259490121F6BE670D52AB9462D.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10718/ECF40C353B23A767F25A01ABF4A5CCD8E74B48B9.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10718/4F829991811B54BF32AEB199B449216C47F0C294.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10718/1EE1224C824BC61B930F4271A219138D2BAB7E68.png" alt="">
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