The number of cyclic wave forms present at one time in an AC circuit is called:
A) Ohms. B) Phase. C) Hertz. D) Frequency.
B
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A nursery-grown transplant is often called a ________.
Fill in the blank(s) with the appropriate word(s).
To install a test blind, make room for the blind and the gaskets with _____.
a. a pry bar b. a jack c. a come-along d. flange spreaders
What is a “cascade” system?
a. The low temp system evaporator cools the condenser of the high temp system. b. The high temp system evaporator cools the condenser of the low temp system.
Thermal radiation is electromagnetic energy.
Answer the following statement true (T) or false (F)