A、<img src="https://learning.mhtall.com/upload/uc_course/1843/C82E04E0AB682C0B64C19123767B4CAF528BDA99.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/1843/2DF4AE645F3B91958C60A87321CCDF67E5CB9634.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/1843/9B0179A08E86CDD4B1D66CB2553FF8022C7BFDB2.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/1843/1A7995571B81E88D22782292C8409EBE5C84D0ED.png" alt="">