The study of sound and sound wave is called​

Technician a says that if a valve is open when a piston rises to the very top of a cylinder, the piston may actually strike the valve head and cause serious engine damage. technician b says if the camshaft is located in the engine block, then the engine is called an overhead valve engine, ohv engine, or an in-block camshaft. who is right? a. b only b. both a and b c. a only d. neither a nor b

Guys do you know sh27 cause he hacked me : ( pidgegunderson my old user

When replacing a thermostat or water pump, coolant drained from the cooling system should be