Purification Safety Question 0904

2019-09-04View Original

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Multiple-choice question: A safety helmet must ensure that there is at least ( ) millimeters of space between a person’s head and the top interior surface of the helmet in order to be used. A、20 B、2 C、32 C

Reply #22019-09-04

I wasn’t paying attention; B is definitely wrong, A is a bit small, and only C is correct.

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Purification Safety Question 0904

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