What must be maintained in the ocean in order for circuits to be connected internationally?
A) submarine cable B) all of the above C) regenerators D) amplifiers
B
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Which European kingdom led the way in developing many of the military innovations of the early modern period?
a. England b. France c. Sweden d. Spain
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In the United States, the per capita consumption of broilers is almost ____________________ pounds.
Fill in the blank(s) with the appropriate word(s).
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Which of the following is NOT a type of backflow?
A. gravity B. back pressure C. back siphonage D. backwater
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Conventional batteries are composed of plates made of _____.
A. antimony B. lead C. calcium D. glass
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