No. The air conditioning and refrigeration technician registration is required for an individual who performs air conditioning and refrigeration maintenance work for a licensed air conditioning contractor.egistration is required for air conditioning technicians who work under a licensed air conditioning and refrigeration contractor and who performs air conditioning and refrigeration maintenance work. Certification is optional.
The term  ringworm , commonly used to refer to such infections, is a misnomer, since the condition is caused by fungi of several different species and not by parasitic worms. The fungi that cause parasitic infection (dermatophytes) feed on keratin, the material found in the outer layer of skin, hair, and nails. These fungi thrive on warm and moist skin, but may also survive directly on the outsides of hair shafts or in their interiors.
Ringworm of the skin is an infection caused by a fungus. Jock itch is a form of ringworm that causes an itchy rash on the skin of your groin area. It is much more common in men than in women. Jock itch may be caused by the spread of athlete's foot fungus to the groin.ou can also get ringworm by touching an infected dog or cat, although this form of ringworm is not common. Ringworm of the skin usually causes a very itchy rash. It often makes a pattern in the shape of a ring, but not always.