Which animal by-product is used in cosmetics, waxes, soap, lubricants, and printing ink?
A. fat
B. gelatin
C. blood
D. hair
Answer: A
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A material that is weak in tension is
A) strong in bending. B) weak in bending. C) no relationship between the tensile and bending strengths of a material.
Consider a sealed 20-cm-high electronic box whose base dimensions are 40?cm × 40?cm placed in a vacuum chamber. The emissivity of the outer surface of the box is 0.95. If the electronic components in the box dissipate a total of 100 W of power and the outer surface temperature of the box is not to exceed 55°C, determine the temperature at which the surrounding surfaces must be kept if this box is to be cooled by radiation alone. Assume the heat transfer from the bottom surface of the box to the stand to be negligible.
What will be an ideal response?
Al instalar aislamiento en láminas sobre una válvula con brida, ¿qué debe utilizarse para medir la circunferencia de la válvula con brida?
a. Un metro plegable b. Cinta métrica c. Un trozo de cuerda d. Una tira de espuma en lámina
Which term means to give birth to baby pigs?
a. gilt c. draft b. dock d. farrow