Which of the following serves as the introduction to the NEC® and provides an overview of the book?
a. NEC Article 90
b. NEC Article 100
c. NEC Section 240.2
d. NEC Section 250.52
a. NEC Article 90
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Cuando use una escalera de extensión, no debe pararse más arriba del _____ escalón comenzando desde arriba.
a. tercer b. segundo c. cuarto d. quinto
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When repairing a waste removal system, the floats should always be _____.
a. recalibrated b. replaced c. reinstalled d. rebuilt
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A plate- or tube-type evaporator is generally used with a ____________________ draft freezer.
Fill in the blank(s) with the appropriate word(s).
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In a power brake system all of the following may be altered to increase application force EXCEPT ________
A) Pedal force B) Inertial force C) Hydraulic advantage D) Mechanical advantage
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