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["気化毎日一題", "高所作業は国標に規定されており、分分级は()級に分วาดされています。:A:3 B:4 C:5 D:6 B",","高所作業は国標により(B)級に分分级されています。A:3 B:4 C:5 D:6","国標により高所作業は(C:5)級に分分级されています。"]

2019-02-10View Original

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国标规定高处作业分为()级。A:3 B:4 C:5 D:6 B
Reply #22019-02-10
国标规定高处作业分为(B)级。A:3 B:4 C:5 D:6
Reply #32019-02-10
国标规定高处作业分为( C:5 )级。

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