Store humidity above ____ will adversely affect open refrigerated case operation.
a. 50% b. 60 % c. 70% d. 80%
b. 60 %
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Insulation added to the floors of a home, especially in below grade basements or crawl spaces, should not be ____________________ as this type will trap moisture against the floor joists and flooring causing rot to develop in both.
Fill in the blank(s) with the appropriate word(s).
If the control system is underdamped then the response for the control system has ringing
Indicate whether the statement is true or false
Para transportar grúas grandes, retire la pluma, los contrapesos y _____.
a. el mástil b. el pórtico c. las bandas de la oruga d. la cabina
Why should the technician check the furnace door safety switch after installation?
A) To test for furnace flashback B) To prevent the furnace from operating with the door removed C) To sync it with the indoor blower D) To check the furnace interior for defects in the outgoing vents