Which of the following is true regarding high-voltage hazards?
a. The use of digging equipment is unlikely to present an electrical hazard.
b. Power lines are not a hazard unless you come into physical contact with them.
c. The minimum approach distance for overhead lines is 25 feet or greater until the line voltage is verified.
d. It is not necessary to contact the local utility when working near overhead lines.
c. The minimum approach distance for overhead lines is 25 feet or greater until the line voltage is verified.
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Imagine and then describe a purchase you might make for which you would consider “opportunity cost.” Explain why you would choose to consider opportunity cost in that situation.
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Which of the following methods is most accurate for checking engine block identification?
A) Owners manual B) Number on engine block C) Vehicle model and year D) Vehicle make and model
Technician A says that a MAF sensor actually measures the density and amount of air flowing into the engine, which results in accurate engine control. Technician B says that a hot wire MAF sensor uses the electronics in the sensor itself to heat a wire 70°C above the temperature of the air entering the engine. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician