May someone help me In tomorrow's physical test plz

Hey.. ♥️♥️ me in solving this question

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.