6. Technician A says that air-conditioning service machines are used exclusively with HFC-134a systems. Technician B says that refrigerant containing sealers should be recycled. Who is correct?
O A. Neither Technician A nor B
O B. Both Technicians And B
OC, Technician B
O D. Technician A

Hyperactive media sales has 10 windows 7 laptop computers used by sales-people in the organization. each laptop computer has several customized applications that are used during the sales process as well as customer relationship management software. all of the applications on the laptops are difficult to configure and have large data files. if all of the laptops have current hardware, what is the easiest way to install windows 10 on them?

Which operating system is a version of linux?

2. fluorine and chlorine molecules are blamed fora trapping the sun's energyob forming acid rainoc producing smogod destroying ozone molecules