11.
Answer 1: Brake pad which is a steel-backed plate with friction material is bound to the surface that faces the disk rotor.
Answer 2: Brake pad which is bound to the surface that faces the disk rotor is a steel-backed plate with friction material.
12.
Answer 1: Battery is used by car engineers to supply a large amout of power to turn the starter motor when the engine is being started by cars engineers.
Answer 2: A large amout of power is supplied to use battery to turn the starter motor when the engine is being started by cars engineers.
#NOCOPY
