Wireless LANs use ________ frequencies to carry traffic through the building and around the floor
Fill in the blank(s) with correct word
infrared
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Fatigue of muscles is due to the accumulation of waste products in the muscle cells.
Answer the following statement true (T) or false (F)
Describe the characteristics of typical drinking fountains.
What will be an ideal response?
What general maintenance task performed on heat exchangers is a surface cleaning technique involving entraining sand into a stream of high-pressure air to remove scale or other deposits from accessible surfaces?
A. Acidizing B. Backwashing C. Water blasting D. Sandblasting
To make sites more sustainable by collecting rainwater _____________________
A. water from downspouts and parking lot runoff can be directed to underground storage for later purification and irrigation uses B. permeable and porous pavers can be used to allow water to pass through them to recharge ground water. C. porous asphalt can lessen the amount of water flowing into storm sewers D. all of the above