Why should humidifiers be cleaned on a regular basis?
What will be an ideal response?
Bacteria and mold can grow since both moisture and a warm environment are present.
Trades & Technology
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The force that causes electrons to flow is most commonly called _____
a. current b. resistance c. voltage d. power
Trades & Technology
Which of the following is the most commonly used reference work on the subject of testing materials?
A. UBC. B. ASTM. C. AISC. D. OSHA. E. AASHTO.
Trades & Technology
Surface falls are divided into four categories: trip and fall, stump and fall, step and fall, and slip and fall.