Ultraviolet air treatment systems are used on __________ systems and are most effective when used in conjunction with a __________ media.

What will be an ideal response?


forced air conditioning or heating, high efficiency air filtration

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Which of the following chemical herbicide families affects plants by causing overstimulation of

growth?

a. acetanilides c. phenoxys b. triazines d. dinitroanilines

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A bus network topology differs from a star network topology in that ________

A) a star network topoogy supports full-duplex communications B) devices connect to two other devices in a star network topology C) devices connect to a hub in a bus network topology D) devices share common communication lines in a bus network topology

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Hubless cast iron pipe is made in service weight only.

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

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Some General Motors flex fuel vehicles do not use a fuel sensor to measure the percentage of ethanol in the fuel. These vehicles use ________ as a base fuel to calculate the percentage using oxygen sensor readings

A) Indolene B) 50% gasoline/50% ethanol C) Gasoline with 10% or less ethanol content D) E85

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