A、<img src="https://learning.mhtall.com/upload/uc_course/10023/29632F3EB89295DA3E0AC552CD20B0B07EE29757.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/EA8D2C92B5C31B3FBC1C7CB3EB727D260889DEFF.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/0E37B906B6055518DF2BBCECF31D6C347723B8D3.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/0223F6DD8D4E997C49F670F7205D93C8EF8AED82.png" alt="">
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