Placarding第 51 / 80 题

What does the number in the bottom corner of a placard represent?

a.The hazard class or division number
b.The truck's license plate number
c.The delivery zip code
d.The number of packages

解析

The number at the bottom of a placard identifies the hazard class or division of the material, such as 3 for flammable liquid or 8 for corrosive. This helps responders quickly understand the hazard. The class number works with the color and symbol on the placard.

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