What do EG, PG, and ELC all have in common?
a.Types of refrigerant
b.Types of engine oil
c.Types of antifreeze
d.Types of gear oil
c.Types of antifreeze
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On a system with a fixed metering device, a low superheat value can indicate _____.
a. an overcharged condition b. too much airflow over the condenser c. a lack of airflow over the evaporator d. that the metering device is too small
Why is the capacity of air conditioning units stated in tons?
A) Because early cooling used tons of ice B) Because the unit capacity is directly related to its weight C) Air conditioners are not rated in tons D) Ton is an acronym for "total output nominal" rating
Which of the following products in not contained in a CFC refrigerant?
A. Chlorine B. Fluorine C. Carbon D. Hydrogen
What do the beams of a ladder directly support?
a. halyard b. rungs c. roof hooks d. fly