问题
填空题
无缝线路作业中的“二清”是：维修作业（），紧修作业一撬一清。
答案
参考答案：半日一清
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无缝线路作业中的“二清”是：维修作业（），紧修作业一撬一清。
参考答案：半日一清
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| ( ) 2. A: ? B:A dog. A. What's that in the picture ? B. What colour is it ? C. Can you spell "dog" ? D. What's that near the dog ? |  |
| ( ) 3. A: ? B: No. Maybe it's Jerry's. A. Is it an eraser ? B. Is it your eraser ? C. Is the eraser white ? D. Is it Jerry's eraser ? |  |
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