chủ nghĩa mac- lênin là nguồn gốc thực tiễn dẫn đến hình thành tư tưởng ồ chí minh đúng hay sai ? vì sao?

The occupational safety and health administration promulgated a rule requiring warehouse employees to wear hardhats when in the vicinity of an operating forklift. the purpose of the hardhats is to protect employees from danger of falling objects. this rule is