A、<img src="https://learning.mhtall.com/upload/uc_course/10023/E4E1FFBA07A6728EBF96C44A2D172FF694AFF518.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/01F88E6E4C3FCAF978E37B7D671DA1BE914D3A60.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/B4123D0A066E6DC46324E765FE94B7F00EC7483A.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/E1BCB3B485A1203FE2C63D0F8D68AB9587EC2DC9.png" alt="">