What problem does chlorofluorocarbon (CFC) create?
a. it causes lead poisoning
b. it causes great damage to the ozone layer
c. it leaks into food as it cools the air and refrigerators
d. it is responsible for most of the pollution created by automobiles

What’s the process of observing someone actually working in a career that interests you?

Me2540 week 5 assignment what do i want to know?

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