The ____ fuel cell is the most commonly used fuel cell in commercial applications.
A. molten carbonate
B. direct methanol
C. phosphoric acid
D. solid oxide
Answer: C
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In a variable frequency drive, the ____________________ circuit converts incoming AC power to DC.
Fill in the blank(s) with the appropriate word(s).
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Landowners in Texas commonly lease ground to hunters
a. True b. False Indicate whether the statement is true or false
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Agricultural and food policy mainly involves a discussion of farm programs
Indicate whether the statement is true or false
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A series RL circuit contains two resistors. The resistors are 60 ? and 30 ?. When calculating the circuit values, the total resistance used is _____.
A. 30 ? B. 60 ? C. 80 ? D. 90 ?
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