Answer:
Explanation:
It's the surface the brake pads contact. When you step on the brakes, pressurized brake fluid pushes against the pistons inside the caliper, forcing the brake pads against the rotor. As the brake pads press against both sides of the disc, the friction stops the wheel's rotation.
Use a code validation tool.
Explanation:
I don't really understand what you're trying to get at, maybe try to abbreviate a little more?
C)Hydroelectric I believe.