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【多选题】
顶推及架法施工，采用的安全要求是( )
A.
顶推施工所用的机具设备、材料使用前，应全面检查，必要做试验
B.
使用的油压千斤顶，应附有球形支承垫、保险圈及
C.
多台千斤顶共同作用时可选用多种类型
D.
采用多点顶推或推，其动力应有统一的控制手段，使其达到同步、纠偏、灵活和安全可靠
E.
在墩台上，要为检查、更换滑道及其他作业留有工作面
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【单选题】(Every now and then) he (would come) here (paying a visit to) his old aunt, who lived (all alone) in a small house.
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【单选题】When you introduce yourself, you can start with “My name is...” or “I’m...”, yes or no?
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【单选题】1927年大革命失败以后,国民党已经变成了一个代表( )买办性大资产阶级利益的政党。
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