Which device is used to assess the flammable range of a released vapor or gas?
a. Thermal imaging device
b. Combustible gas indicator
c. Colorimetric test strip
d. Vapor ionization detector
Answer: b. Combustible gas indicator
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A clerk can lift containers a vertical distance of 1 m or can roll them up a 2-m-long ramp to the same elevation. With the ramp, the applied force required is about
A) half as much. B) twice as much. C) the same.
The general pattern of atmospheric carbon dioxide concentration between 1960 and 2010 reveals
A) a steady increase from about 310 ppm to the current 400 ppm. B) no significant increases until the year 2005. C) mitigation of an increasing trend due to reduced use of fossil fuels. D) that most of the increase is the result of agricultural wastes and deforestation.
Which of the following is NOT TRUE regarding aspects of the third stage of demographic transition?
A) Most (if not all) developed world countries passed through this stage. B) Women who are in the work force tend to have fewer children. C) There is a link between labor markets and fertility behavior. D) Fertility rates rise. E) Death rates remain low.
The Russian region is often referred to as Russia and the Near Abroad. What sub-regions constitute the Near Abroad?