El símbolo que generalmente se utiliza para receptáculos dobles es:
a. un círculo con dos líneas paralelas que lo atraviesan.
b. una caja cuadrada con una X en su interior.
c. una caja cuadrada con la letra R junto a ella.
d. un círculo con una línea que lo atraviesa.
a. un círculo con dos líneas paralelas que lo atraviesan.
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What will be an ideal response?
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What will be an ideal response?