If a sewage pump or ejector serves a single-family dwelling, it must be capable of passing a solid at least 1½ inches in diameter and have a ____ minimum discharge pipe size.

a. 1½-inch
b. 2-inch
c. 3-inch
d. 4-inch


ANSWER: b

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El peso utilizado para facilitar el desenrollado de un tambor del motor para levantar cargas se denomina ________.

a. peso de caída b. bola de demolición c. bloque de carga d. colgante

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A solid plate, with a thickness of 15 cm and a thermal conductivity of 80?W/m•K, is being cooled at the upper surface by air. The air temperature is 10°C, while the temperatures at the upper and lower surfaces of the plate are 50 and 60°C, respectively. Determine the convection heat transfer coefficient of air at the upper surface, and discuss whether the value is reasonable or not for forced convection of air.

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The 2002 stocktaking for the World Food Summit underscores the potential for biotechnology as a means of meeting world food needs

Indicate whether the statement is true or false

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At what height should a thermostat be mounted above the floor?

What will be an ideal response?

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