?Portable welders often have _____ or ______ plug outlets.
A. ?110-volt or 220-volt
B. ?110-volt or 120-volt
C. ?12-volt DC or 24-volt DC
D. ?12-volt AC or 24-volt AC
Answer: A
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The magnetic lines of force of a magnet that flow between the north and south poles are called ____________________.
Fill in the blank(s) with the appropriate word(s).
One of two alternatives will be selected to reduce flood damage in a rural community in central Arizona. The estimates associated with each alternative are available. Use B/C analysis at a discount rate of 8% per year over a 20-year study period to determine which alternative should be selected. For analysis purposes only, assume the flood damage would be prevented in years 3, 9, and 18 of the study period.
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Arthropods are a diverse group of invertebrate animals that total more than one million species (more arthropods on planet earth than all other animals combined)
A. True B. False
Age-related cataracts are common in most dogs over 13-14 years of age. Older cats and birds are also prone to have cataracts
A. True B. False