【单选题】【消耗次数：1】
安全帽必须具有（）抗侧压力、绝缘、耐穿刺等性能，使用中必须正确佩戴。
①
抗腐蚀
②
抗正压
③
抗冲击
④
抗老化
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相关题目
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根据《安全标志》(GB2894)安全标志“禁止抛物”、“当心触电”、“必须戴安全帽”分别属于( )。
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