(20 14? As shown in the picture, Xiaohong is standing on the escalator with her schoolbag on her back, and goes up with the escalator at a constant speed.

(1) Xiaohong stands on the escalator, and takes the escalator as a reference in the process of ascending. Xiao Ming's position relative to the escalator has not changed, so Xiao Hong remains.

(2) During the ascent, Xiaohong's velocity is unchanged, so its kinetic energy is unchanged and its height is increased, so its gravitational potential energy is increased, so Xiaohong's mechanical energy is increased;

(3) In the process of rising, Xiaohong carried her schoolbag and exerted a force on it, which passed a certain distance along the direction of the force, so Xiaohong did something for the schoolbag.

So the answer is: still; Increase; Did some work.