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当前学科：危险化学品安全作业
题目：
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高处作业应使用符合安全要求的（）、安全带等，跳板必须符合要求，两端必须捆绑牢固。作业前，应仔细检查所用的安全设施是否坚固、牢靠。夜间高处作业应有充足的照明。
A
吊笼
B
梯子
C
防护围拦
D
挡脚板
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