The Edison-type lamp uses a(n) ____ enclosed in a glass bulb to produce the light.
A. halogen rod
B. tungsten filament
C. inert gas
D. wire filament
Answer: D
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In a typical concrete mix, 10 to 15 percent of the volume is _____.
a. water b. aggregate c. admixtures d. portland cement
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Mature ruminants can thrive on lower quality diets than can mature monogastrics.
Answer the following statement true (T) or false (F)
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If the output of an astable 555 timer is LOW for 33 ms and HIGH for 67 ms, the duty cycle is
A) 16.5%. B) 33%. C) 33.5%. D) 67%.
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There are generally three types of positive displacement pumps that are in use today: the vane pump, the ____ pump, and the piston pump.
A. centrifugal B. impeller C. gear D. radial axis
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