【判断题】
消防安全带分为I型、II型、III型、Ⅳ型四类。
A. 对
B. 错
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答案
B
解析
暂无解析
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【判断题】
胸外心脏按压训练的方法是双手掌根重叠，十指相扣，掌心翘起，手指离开胸壁，上半身前倾，双臂伸直，垂直向下用力、有节奏地按压40次，下压深度（成人）4～5cm，按压频率120次/分钟，按压与放松的时间相等。
A. 对
B. 错
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