What is the difference between a fire tube and a water tube boiler?
A) Water is inside the tubes of a water tube boiler and outside the tubes of a fire tube boiler.
B) Fire tube boilers are fueled with gas or oil, and water tube boilers are fueled with steam.
C) Fire tubes are manufactured using heat and flames, and water tubes are manufactured using high-velocity jets of water.
D) Water is outside the tubes of a water tube boiler and inside the tubes of a fire tube boiler.
A
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Un lugar adecuado para obtener información sobre el halado de determinadas marcas de cables es:
a. el manual del sistema tiracables. b. el NEC®. c. los catálogos del fabricante. d. revistas del sector.
Booker T. Washington believed that the key to political and civil rights for African Americans was
A. the adoption of Socialism in the United States. B. rigorous academic training. C. the rejection of accommodationist attitudes. D. to directly challenge white supremacy. E. economic independence and education in agriculture and the trades.
One transfer switch shall be permitted to serve one or more branches or systems in a facility with a maximum demand on the essential electrical system of ____.
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