The accompanying figure shows an assortment of mechanical symbols. What is the second symbol from the top?
A. Diaphragm valve
B. Angle globe valve
C. Ball valve
D. Butterfly valve
Answer: D
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What is the material in a bag of grass seed that adds bulk and weight but will not grow?
a. noxious weeds c. fertilizer b. filler d. inert material
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What category of electric meter is intended for measurement at the electric meter base?
A) Category II B) Category I C) Category IV D) Category III
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An increase in temperature will cause viscosity to _____
A) decrease B) increase C) vary randomly D) remain the same
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The bottom view usually shows the most hidden features.
Answer the following statement true (T) or false (F)
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