"Okay, first question." After taking a seat before the study table, Chen Yu quickly wrote something on the test paper. While writing, he said, "As shown in the picture, mass M's inclined plane rests on a rough surface. The angle of inclination is 0..."
![](//book-pic.webnovel.com/bookcover/16732990506157805?imageMogr2/thumbnail/180x&imageId=1596104462923)
Transdimensional Marketing
Urban · Three Rows of Books
detail