NFPA 72® contains requirements for _____.
a. all electrical work performed in a building
b. residential and commercial installation of fire alarm systems and equipment
c. life safety
d. the testing, operation, installation, and periodic preventive maintenance of fire alarm
systems
b. residential and commercial installation of fire alarm systems and equipment
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What is used to link a piston with a connecting rod?
A. wrist pin B. piston journal C. rod eye D. rod big end
Which of the following is an example of a demographic force in the environment?
a. Race b. Gender c. Sexual orientation d. Ethnic origin e. All of the above
The tight bond between the refrigerant tube and the fins on tube-and-fin coils is made by:
A) Soldering the fins to the tubing. B) Machining the fins and tubing out of a single piece of solid metal. C) Expanding the tubing into the fins. D) Glueing the fins to the tubing.
____ boxes are used primarily to install ceiling outlets.
Fill in the blank(s) with correct word