Technician A says that formaldehyde can cause cancer. Technician B says that oxides of nitrogen are converted by living plants into oxygen. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A
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Answer the following statement(s) true (T) or false (F)
Some urinal designs are no longer permitted by current plumbing codes but are still in use today.
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El artículo 9 del NEC® contiene:
a. tablas. b. requisitos para sistemas de comunicación. c. requisitos para equipos especiales. d. requisitos para viviendas especiales.
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What causes the conductive surface area of the cable to decrease as signal frequencies increase?
A. Characteristic Impedance B. Changes in temperature C. Skin effect D. Bend radius
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Typical insulators are ____.
A. copper, silver, gold B. steel, bronze, brass C. glass, rubber, plastic D. aluminum, nickel, magnesium
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