A refrigerator with forced draft will have ____________________ fans.
Fill in the blank(s) with the appropriate word(s).
two
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Central heating systems are divided into two types, forced air and ____________________.
Fill in the blank(s) with the appropriate word(s).
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Organic crops are grown without the use of chemicals
Indicate whether the statement is true or false.
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The most popular enrichment material for both recreational and aesthetic enjoyment is what?
a. animal life c. water b. plant life d. rolling terrain
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Devices that are used to develop digital sequences are called
A) parallel counters. B) shift counters. C) serial counters. D) sequential counters.
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