Christian Hanma
2020-06-08T06:40:06+00:00
下面的式子中,第几个等号是错的?
[img]https://img.nga.178.com/attachments/mon_202006/09/-7Q5-bmvxK5T1kSf6-28.jpg.medium.jpg[/img]
[img]https://img.nga.178.com/attachments/mon_202006/09/-7Q5-bmvxK5T1kSf6-28.jpg.medium.jpg[/img]