¿Cuál de los siguientes elemen- tos se usa en la obra para trasla- dar el concreto de los camiones de entrega de concreto elabo- rado a los lugares de colocación tanto en dirección horizontal como vertical?
a. una mezcladora para gran-
des volúmenes
b. una canaleta de caída
c. una manga articulada
d. una bomba pluma de
concreto
Answer: D
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