Technician A says that electric cooling fans do not control engine temperature as precisely as an engine driven fan with a thermostatic fan clutch. Technician B says that some electric cooling fans use pulse width modulation to control airflow across the radiator coils. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
B
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Construction of an arch is always begun at the two ends and laid up to the center of the arch.
Answer the following statement true (T) or false (F)
In the past, heat stabilizers were compounds based on ____ and cadmium but these metals posed environmental and health concerns. ?
A. ?silver B. ?nickel C. ?mercury D. ?lead
Housing provides shelter from the elements and ____________________
Fill in the blank(s) with correct word
What is general corrosion?
A) Corrosion due to oxidation and chemical attack B) Corrosion at the contact point of two types of metal in the presence of an electrolyte C) Corrosion due to chemical incompatibility between the coil and the refrigerant D) Corrosion due to attack by metal eating organisms