【单选题】Suppose that a flat area with center at (x0, y0) is illuminated by a light source with intensity distribution i(x, y) = Ke-[(x-x0)^2+(y-y0)^2] Assume for simplicity that the reflectance of the area is...
【简答题】听力21-24题 I should say that teaching English in China is a real job, and the schools 20 ____y ou to be professional and you have to__21_____. If you don’t meet their requirements, it is easy to get fi...