NEC identifies ____ types of rigid PVC conduit.
A. two
B. three
C. five
D. ten
Answer: C
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Which of these is NOT a nonmineral nutrient element required by plants?
a. Oxygen c. Hydrogen b. Manganese d. Carbon
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If the condenser split of a unit is supposed to be 30° what is the head pressure of an R404A unit supposed to be if the ambient air at the condenser is 84°?
a. 210 psig b. 240 psig c. 270 psig d. 290 psig
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The relationship between magnetic and electrical effects is referred to as the Edison effect
Indicate whether the statement is true or false
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