Which statement summarizes the overall effect of negative-pressure ventilation?
a. it releases the contaminated atmosphere
b. it pulls smoke out
c. it displaces the contaminated atmosphere
d. it pushes smoke out
Answer: b. it pulls smoke out
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Los niveles de iluminación en los pasillos de áreas públicas de un edificio deben tener al menos:
a. el mismo nivel de iluminación que las áreas adyacentes. b. el 20% del nivel de iluminación de las áreas adyacentes. c. el 50% del nivel de iluminación de las áreas adyacentes. d. el 75% del nivel de iluminación de las áreas adyacentes
By mid-1941, Japan believed that it had no alternative to war with the United States because President Franklin Roosevelt
A. was committed to Britain and Holland retaining their colonial assets and economic power in the Dutch East Indies. B. had in 1941 imposed a freezing of assets and a cessation of all shipments and other critical raw materials in an effort to persuade Japan to withdraw from China. C. demanded Japan renew its trade with America. D. break its treaty of nonaggression with Germany. E. None of these choices are correct.
Which of the following is a type of sports arena that uses flooded evaporators?
A) Soccer field B) Baseball field C) Ice rink D) Basketball court
How close should a high vacuum/low volume exhaust inlet be located to the source of welding fumes?
a. 2" to 4" (?5 to 10 cm) b. 6" to 8" (?15 to 20 cm) c. 12" to 14" (?30 to 36 cm) d. At least 12 feet (?3.66 meters) away