Water being used and recycled again and again is _____

A) carcinogenic
B) the hydrological cycle
C) the aqua cycle
D) the sediment cycle


B

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Technician A says that solvents with a flash point below 140°F (60°C) are combustible. Technician B says that solvents with a flash point above 140°F (60°C) are flammable. Which technician is correct?

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

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The HID lighting system consists of all of these components, EXCEPT ________

A) Discharge arc source B) Ballast C) Igniter D) Filament

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What is considered world-class quality today will be considered mediocre tomorrow.