9. Light is emitted from an LED as a result of the recombining of electrons and __________

A. optic fibers
B. holes
C. decibels
D. nanometers


B

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Type USE cable used for service laterals can ___.

A. be contained in a raceway B. be locally grounded C. emerge aboveground at outside terminations D. be indirectly buried

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Solid contour lines are used on site plans to show _____

a. natural grade b. footing elevation c. finish grade d. finish floor elevation

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Which type of actuator uses an electromagnetic plunger to open and close a passage or move a linkage?

A) Transistor B) Relay C) LED D) Solenoid

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Primary auxiliary views are views that take the place of a principal view.

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

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