A、<img src="https://learning.mhtall.com/upload/uc_course/10154/C0E523A7B63E25495DBCEACBEDC0AB57B9AF6D35.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10154/B31D383A5A49FB00CD65059CD7879A1EF161DC2A.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10154/7AE504973D50FB2287D471953EA1019D1A6E582D.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10154/6DFC3B127BA590BDE96E79866E5F331337E6CFD4.png" alt="">
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