A、<img src="https://learning.mhtall.com/upload/uc_course/10023/73C17FF2537636331068634F692EE1830C832616.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/539B0C87C8461EA381642C181B32266905B78325.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/6C8733AEC45C651DC8529072A7519922BBBDE16D.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/E1FB94B6A51FB06F21EDE00D9CB6E1AAEC4E0609.png" alt="">