In repairing a car, 8 hex head bolts, 2 oil-pan bolts, 5 fender bolts, and 3 differential-cover bolts are needed. How many bolts are used in all?
A. 11
B. 15
C. 16
D. 18
Answer: D
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In the diagram below, what is the perimater of polygon GHKMNP?
Fill in the blank(s) with the appropriate word(s).
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GFCI protection is required for receptacles installed to serve ____.
A. wall counter space B. receptacles installed along a wall C. kitchen countertop surfaces D. inside cabinet receptacles
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When a carrier is conveying intelligence by simply turning it on or off according to a prearranged code, this type of transmission is called ____________
A. continuous wave B. sine wave C. square wave D. cosine wave
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Harmonics on single-phase powerlines are generally caused by a device such as a _____.
A. ?triac light dimmer B. lamp with an incandescent bulb C. single-speed motor D. ?heater
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