Which size of coupling are the outlets on most fire hydrants sized to fit?
a. 4"
b. 2 1/2"
c. 3"
d. 3 1/2"
Answer: b. 2 1/2"
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The geometry of the covalent bonds shared by the hydrogen atoms and oxygen atom in a water molecule account for its polarity
Indicate whether the statement is true or false
Hot spots form linear island chains because
A. they occur along the mid-oceanic ridges. B. they are aligned with trenches formed by subduction. C. the plate moves relative to the underlying hot spot.
Which disease is transmissible?
A. heart disease B. cancer C. tuberculosis D. malnutrition E. asthma
The Kyoto Protocol:
A. called for stabilization of greenhouse gases at levels that would not harm the climate system. B. did the actual research and reviews of thousands of published scientific papers and reports. C. set up arrangements for sharing data on climate, developing national plans for controlling greenhouse gas emissions, and for adapting to climate change. D. ended in a 60-hour negotiation session in which all the developed and developing countries, including China and the United States, agreed to legally binding restrictions on greenhouse gas emissions.