The law of conservation of matter states that:
A) Only "green" matter should be used for installing HVACR systems.
B) Matter should not be wasted.
C) Matter cannot be created or destroyed.
D) An equal amount of matter is always created somewhere whenever matter is destroyed.
C
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The yellow diamond on the NFPA warning diamond indicates a(n) _____.
a. flammability hazard b. health hazard c. instability hazard d. special hazard
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Approximately 50% of family pets come from animal shelters
Indicate whether the statement is true or false
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The ____ is the ratio of rise to span of a roof.
a.plumb line b.level line c.yaw d.pitch
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Type NM cable must be secured at no more than __________ inches from all electrical boxes except a nonmetallic single-gang box.
a. 6 b. 8 c. 10 d. 12
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