(20 12? The picture shows the scenery complementary landscape lighting used in Dezhou Development Zone. It has a small fan on its head and a photovoltaic panel on its shoulder.

A, this kind of new energy street lamp, the "shoulder-mounted" solar panel can also convert solar energy into electric energy;

B. At the same time, the lighting lamp consumes electric energy and emits light, that is, the electric energy is converted into light energy,

C, the small fan on the "overhead" can convert wind energy into electric energy, so that this street lamp can generate electricity as long as there is wind, which fills the gap that it can't generate electricity on cloudy days and at night, and is conducive to the use of street lamp lighting at night;

D, when the battery is discharged at night, the chemical energy is converted into electrical energy;

Therefore, after defining the functions of various parts of landscape energy-saving lamps, we can know that option C is correct.

So choose C.