is caused by corrosion, leading to surface wear and eventual failure.
Fill in the blank(s) with the appropriate word(s).
Pitting
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If low-voltage and high-voltage cables must be placed in parallel runs, they should be separated by at least 6" (150 mm) in order to protect the low-voltage conductors from _____.
a. noise b. corrosion c. heat d. vibration
A horse’s structure is known as its ____________________.
Fill in the blank(s) with the appropriate word(s).
Gas fired rooftop units are normally vented though
A) Draft hoods connected directly to the unit B) A separate power venter C) Double wall vent pipe connected to the top of the unit D) Double wall vent pipe connected to the side of the unit
Blueprints can be used to size air-conditioning and heating equipment.
Answer the following statement true (T) or false (F)