【单选题】
保险带、绳使用长度在3m以上的应（ ）。___
A. 缠绕使用
B. 加缓冲器
C. 禁止使用
D. 采取减少长度的措施
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答案
B
解析
暂无解析
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腰带和保险带、绳应有足够的机械强度，材质应耐磨，卡环（钩）应具有保险装置，操作应灵活。保险带、绳使用长度在（ ）m以上的应加缓冲器。___
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【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
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【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
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【单选题】
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【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
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