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Para un producto con valor VLA-ED establecido en 20 ppm y que carece de VLA-EC de detectan exposiciones, señala la que consideras supera la exposición diaria máxima permitida:a) Una exposición durante la jornada a 62 ppm durante un periodo de 25 minutos continuados.b) Diez exposiciones durante la jornada a una concentración de 58 ppm y una duración de 4 minutos cada una.c) Un exposición durante la jornada a 102 ppm durante un periodo de 1 minuto.d) En todas ellas se supera la exposición máxima permitida.

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