Technician A says that when an electronic braking system (EBS) is used on an air brake system, the control circuit is pneumatic and the actuator circuit is electronic-over-electric. Technician B says that when EBS is used at this moment in time in North America, it is required to have full FMVSS-121 redundancy. Who is correct

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0