Benjamin Franklin, in 1748, strung together several Leyden jars as ____ and called the array a “Battery”.
a. inverters
b. transformers
c. capacitors
d. resistors
c. capacitors
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Which of the following is not a contour symbol used on the welding symbol?
a. Concave b. Flush c. Depressed d. Convex
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Protozoa are multicelled organisms that live in the soil
Indicate whether the statement is true or false
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Trends in human foods are unrelated to trends in petfoods
A. True B. False
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Jamming of drills, when drilling deep holes, can be avoided by using a procedure called:
A) Withdrawal B) Alternating C) Pecking D) Chipping
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