For a temperature of about 68 °F, most people find a relative humidity _____ to be acceptable.
A. less than 30%
B. between 30% and 70%
C. at least 75%
D. between 75% and 80%
Answer: B
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El factor de demanda para cargas de artefactos fijos (se excluyen secarropas y hornos) en el cálculo de carga de servicio estándar es del:
a. 40%. b. 50%. c. 75%. d. 100%.
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Specific genes on the chromosomes of certain plant cells can make the plant resistant to a pest
Indicate whether the statement is true or false.
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Methanol is also called ________
A) Wood alcohol B) Methyl hydrate C) Methyl alcohol D) All of the above
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Air braking takes more time than hydraulic braking because:
a. Air brakes use different brake drums. b. Air brakes take more time to flow through the lines than hydraulic fluid. c. Air brakes requires heavier return springs.
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