Fruit trees are generally pollinated by _____
a. machines c. flowers
b. insects d. people
B
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Las calderas construidas en fábrica suelen llamarse calderas _____ .
a. más pequeñas b. auxiliares c. embaladas d. de calentamiento
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UL Class R fuses have a short circuit interrupting rating of up to _____.
a. 50,000A b. 75,000A c. 125,000A d. 200,000A
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What is the cause of a flushometer vacuum breaker leaking around the air ports?
What will be an ideal response?
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During the 1990s, the rate of increase of food production has declined
Indicate whether the statement is true or false
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