However, if you think that being ahead of others in advance can make your children feel more fulfilled, or you won't feel inferior because you are left behind by others, you can sign up for this class, but if you can lay a good ideological foundation for your children in advance and let them know that as long as you study hard at school and catch up with or even surpass them, there is no need to sign up for this remedial class. Of course, this idea is not applicable when you are in junior high school or junior high school. After all, you were not in contact at that time.
Lifting machinery refers to the machinery that suspends heavy objects with hooks or other fetching devices and carries out cyclic operations such a