____ electrodes are used to extend the life of a spark plug.

a. Platinum
b. Titanium
c. Gold
d. Steel


a. Platinum

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Technician A says that a vibration damper, also known as a harmonic balancer, is used to dampen harmful twisting vibrations of the crankshaft. Technician B says that most engines are externally balanced. Which technician is correct?

A) Technician A B) Technician B C) Both technicians D) Neither technician

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High pressure hoses have to be used on the high pressure side of the power steering system because pressures can reach as high as ________

A) 750 psi B) 1500 psi C) 2500 psi D) 200 psi

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Elements that join pairs together are known as chains.

Answer the following statement true (T) or false (F)

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An OSHA certified competent person must be on each excavation site at all working times.

Answer the following statement true (T) or false (F)

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