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
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
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
Hubless cast iron pipe is made in service weight only.
Answer the following statement true (T) or false (F)