One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； June 04th
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Multiple-choice question: As an important personal protective equipment for workers in chemical plants, safety helmets are essential in on-site production. Under normal circumstances, a safety helmet can withstand the impact of a （ ） kg hammer falling from a height of 1 meter. A 5 B 4 C 3 D 2 Answer: C 3
As an important personal protective equipment for workers in chemical plants, safety helmets are essential in on-site production environments. Under normal circumstances, a safety helmet can withstand the impact of a (c) kg hammer falling from a height of 1 meter