问题
单项选择题
高处坠落、物体打击、（）是高处作业中最常见的事故。
A、跌落
B、触电
C、掉落
答案
参考答案：B
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高处坠落、物体打击、（）是高处作业中最常见的事故。
A、跌落
B、触电
C、掉落
参考答案：B
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